Home / 102,465.72-141,402.42-57,143.76

Finding the Fourth Proportional to 102,465.72, 141,402.42 and 57,143.76

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Solution

The fourth proportional to 102,465.72, 141,402.42 and 57,143.76 is: 78,858.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,465.72 : 141,402.42 = 57,143.76 : x
  2. Step 2: Convert to fraction form
    102,465.72/141,402.42 = 57,143.76/x
  3. Step 3: Cross multiply
    102,465.72x = 141,402.42 × 57,143.76
  4. Step 4: Simplify right side
    102,465.72x = 8,080,265,951.90
  5. Step 5: Solve for x
    x = 8,080,265,951.90/102,465.72
  6. Step 6: Final answer
    x = 78,858.24

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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.