Home / 107,428.30-161,142.45-60,772.30

Finding the Fourth Proportional to 107,428.30, 161,142.45 and 60,772.30

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Solution

The fourth proportional to 107,428.30, 161,142.45 and 60,772.30 is: 91,158.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,428.30 : 161,142.45 = 60,772.30 : x
  2. Step 2: Convert to fraction form
    107,428.30/161,142.45 = 60,772.30/x
  3. Step 3: Cross multiply
    107,428.30x = 161,142.45 × 60,772.30
  4. Step 4: Simplify right side
    107,428.30x = 9,792,997,314.14
  5. Step 5: Solve for x
    x = 9,792,997,314.14/107,428.30
  6. Step 6: Final answer
    x = 91,158.45

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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.