Home / 102,701.52-141,728.76-57,381.12

Finding the Fourth Proportional to 102,701.52, 141,728.76 and 57,381.12

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Solution

The fourth proportional to 102,701.52, 141,728.76 and 57,381.12 is: 79,186.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,701.52 : 141,728.76 = 57,381.12 : x
  2. Step 2: Convert to fraction form
    102,701.52/141,728.76 = 57,381.12/x
  3. Step 3: Cross multiply
    102,701.52x = 141,728.76 × 57,381.12
  4. Step 4: Simplify right side
    102,701.52x = 8,132,554,985.01
  5. Step 5: Solve for x
    x = 8,132,554,985.01/102,701.52
  6. Step 6: Final answer
    x = 79,186.32

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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.