Home / 102,814.18-141,876.12-56,871.88

Finding the Fourth Proportional to 102,814.18, 141,876.12 and 56,871.88

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Solution

The fourth proportional to 102,814.18, 141,876.12 and 56,871.88 is: 78,479.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,814.18 : 141,876.12 = 56,871.88 : x
  2. Step 2: Convert to fraction form
    102,814.18/141,876.12 = 56,871.88/x
  3. Step 3: Cross multiply
    102,814.18x = 141,876.12 × 56,871.88
  4. Step 4: Simplify right side
    102,814.18x = 8,068,761,671.51
  5. Step 5: Solve for x
    x = 8,068,761,671.51/102,814.18
  6. Step 6: Final answer
    x = 78,479.07

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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.