Home / 210,840.18-316,039.92-92,411.70

Finding the Fourth Proportional to 210,840.18, 316,039.92 and 92,411.70

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Solution

The fourth proportional to 210,840.18, 316,039.92 and 92,411.70 is: 138,520.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,840.18 : 316,039.92 = 92,411.70 : x
  2. Step 2: Convert to fraction form
    210,840.18/316,039.92 = 92,411.70/x
  3. Step 3: Cross multiply
    210,840.18x = 316,039.92 × 92,411.70
  4. Step 4: Simplify right side
    210,840.18x = 29,205,786,275.06
  5. Step 5: Solve for x
    x = 29,205,786,275.06/210,840.18
  6. Step 6: Final answer
    x = 138,520.97

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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.