Home / 124,807.68-172,324.80-77,126.40

Finding the Fourth Proportional to 124,807.68, 172,324.80 and 77,126.40

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Solution

The fourth proportional to 124,807.68, 172,324.80 and 77,126.40 is: 106,490.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,807.68 : 172,324.80 = 77,126.40 : x
  2. Step 2: Convert to fraction form
    124,807.68/172,324.80 = 77,126.40/x
  3. Step 3: Cross multiply
    124,807.68x = 172,324.80 × 77,126.40
  4. Step 4: Simplify right side
    124,807.68x = 13,290,791,454.72
  5. Step 5: Solve for x
    x = 13,290,791,454.72/124,807.68
  6. Step 6: Final answer
    x = 106,490.17

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1.5x scale

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.