Home / 124,617.89-172,116.09-90,777.71

Finding the Fourth Proportional to 124,617.89, 172,116.09 and 90,777.71

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Solution

The fourth proportional to 124,617.89, 172,116.09 and 90,777.71 is: 125,377.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,617.89 : 172,116.09 = 90,777.71 : x
  2. Step 2: Convert to fraction form
    124,617.89/172,116.09 = 90,777.71/x
  3. Step 3: Cross multiply
    124,617.89x = 172,116.09 × 90,777.71
  4. Step 4: Simplify right side
    124,617.89x = 15,624,304,934.64
  5. Step 5: Solve for x
    x = 15,624,304,934.64/124,617.89
  6. Step 6: Final answer
    x = 125,377.70

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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.