Home / 124,780.16-172,260.11-77,061.20

Finding the Fourth Proportional to 124,780.16, 172,260.11 and 77,061.20

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Solution

The fourth proportional to 124,780.16, 172,260.11 and 77,061.20 is: 106,383.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,780.16 : 172,260.11 = 77,061.20 : x
  2. Step 2: Convert to fraction form
    124,780.16/172,260.11 = 77,061.20/x
  3. Step 3: Cross multiply
    124,780.16x = 172,260.11 × 77,061.20
  4. Step 4: Simplify right side
    124,780.16x = 13,274,570,120.08
  5. Step 5: Solve for x
    x = 13,274,570,120.08/124,780.16
  6. Step 6: Final answer
    x = 106,383.66

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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.