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Finding the Fourth Proportional to 171,213.80, 257,127.90 and 124,519.40

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Solution

The fourth proportional to 171,213.80, 257,127.90 and 124,519.40 is: 187,002.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,213.80 : 257,127.90 = 124,519.40 : x
  2. Step 2: Convert to fraction form
    171,213.80/257,127.90 = 124,519.40/x
  3. Step 3: Cross multiply
    171,213.80x = 257,127.90 × 124,519.40
  4. Step 4: Simplify right side
    171,213.80x = 32,017,411,831.26
  5. Step 5: Solve for x
    x = 32,017,411,831.26/171,213.80
  6. Step 6: Final answer
    x = 187,002.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.