Home / 200,202,308.70-300,303,463.05-85,190,603.10

Finding the Fourth Proportional to 200,202,308.70, 300,303,463.05 and 85,190,603.10

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Solution

The fourth proportional to 200,202,308.70, 300,303,463.05 and 85,190,603.10 is: 127,785,904.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,202,308.70 : 300,303,463.05 = 85,190,603.10 : x
  2. Step 2: Convert to fraction form
    200,202,308.70/300,303,463.05 = 85,190,603.10/x
  3. Step 3: Cross multiply
    200,202,308.70x = 300,303,463.05 × 85,190,603.10
  4. Step 4: Simplify right side
    200,202,308.70x = 25,583,033,130,248,064
  5. Step 5: Solve for x
    x = 25,583,033,130,248,064/200,202,308.70
  6. Step 6: Final answer
    x = 127,785,904.65

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.