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Finding the Fourth Proportional to 125,159.91, 172,694.79 and 71,462.40

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Solution

The fourth proportional to 125,159.91, 172,694.79 and 71,462.40 is: 98,603.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,159.91 : 172,694.79 = 71,462.40 : x
  2. Step 2: Convert to fraction form
    125,159.91/172,694.79 = 71,462.40/x
  3. Step 3: Cross multiply
    125,159.91x = 172,694.79 × 71,462.40
  4. Step 4: Simplify right side
    125,159.91x = 12,341,184,160.90
  5. Step 5: Solve for x
    x = 12,341,184,160.90/125,159.91
  6. Step 6: Final answer
    x = 98,603.33

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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.