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Finding the Fourth Proportional to 125,097.93, 172,592.30 and 71,344.31

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Solution

The fourth proportional to 125,097.93, 172,592.30 and 71,344.31 is: 98,430.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,097.93 : 172,592.30 = 71,344.31 : x
  2. Step 2: Convert to fraction form
    125,097.93/172,592.30 = 71,344.31/x
  3. Step 3: Cross multiply
    125,097.93x = 172,592.30 × 71,344.31
  4. Step 4: Simplify right side
    125,097.93x = 12,313,477,870.21
  5. Step 5: Solve for x
    x = 12,313,477,870.21/125,097.93
  6. Step 6: Final answer
    x = 98,430.71

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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.