Home / 100,871.07-139,296.56-63,210.93

Finding the Fourth Proportional to 100,871.07, 139,296.56 and 63,210.93

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Solution

The fourth proportional to 100,871.07, 139,296.56 and 63,210.93 is: 87,290.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,871.07 : 139,296.56 = 63,210.93 : x
  2. Step 2: Convert to fraction form
    100,871.07/139,296.56 = 63,210.93/x
  3. Step 3: Cross multiply
    100,871.07x = 139,296.56 × 63,210.93
  4. Step 4: Simplify right side
    100,871.07x = 8,805,064,787.35
  5. Step 5: Solve for x
    x = 8,805,064,787.35/100,871.07
  6. Step 6: Final answer
    x = 87,290.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.