Home / 145,681.05-201,039.80-85,263.20

Finding the Fourth Proportional to 145,681.05, 201,039.80 and 85,263.20

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Solution

The fourth proportional to 145,681.05, 201,039.80 and 85,263.20 is: 117,663.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,681.05 : 201,039.80 = 85,263.20 : x
  2. Step 2: Convert to fraction form
    145,681.05/201,039.80 = 85,263.20/x
  3. Step 3: Cross multiply
    145,681.05x = 201,039.80 × 85,263.20
  4. Step 4: Simplify right side
    145,681.05x = 17,141,295,243.85
  5. Step 5: Solve for x
    x = 17,141,295,243.85/145,681.05
  6. Step 6: Final answer
    x = 117,663.18

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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.