Home / 102,462.12-141,398.46-57,142.98

Finding the Fourth Proportional to 102,462.12, 141,398.46 and 57,142.98

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Solution

The fourth proportional to 102,462.12, 141,398.46 and 57,142.98 is: 78,857.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,462.12 : 141,398.46 = 57,142.98 : x
  2. Step 2: Convert to fraction form
    102,462.12/141,398.46 = 57,142.98/x
  3. Step 3: Cross multiply
    102,462.12x = 141,398.46 × 57,142.98
  4. Step 4: Simplify right side
    102,462.12x = 8,079,929,371.81
  5. Step 5: Solve for x
    x = 8,079,929,371.81/102,462.12
  6. Step 6: Final answer
    x = 78,857.72

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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.