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Finding the Fourth Proportional to 125,117.99, 172,675.23 and 71,411.12

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Solution

The fourth proportional to 125,117.99, 172,675.23 and 71,411.12 is: 98,554.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,117.99 : 172,675.23 = 71,411.12 : x
  2. Step 2: Convert to fraction form
    125,117.99/172,675.23 = 71,411.12/x
  3. Step 3: Cross multiply
    125,117.99x = 172,675.23 × 71,411.12
  4. Step 4: Simplify right side
    125,117.99x = 12,330,931,570.56
  5. Step 5: Solve for x
    x = 12,330,931,570.56/125,117.99
  6. Step 6: Final answer
    x = 98,554.43

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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.