Home / 87,312.44-130,234.16-84,688.76

Finding the Fourth Proportional to 87,312.44, 130,234.16 and 84,688.76

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Solution

The fourth proportional to 87,312.44, 130,234.16 and 84,688.76 is: 126,320.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,312.44 : 130,234.16 = 84,688.76 : x
  2. Step 2: Convert to fraction form
    87,312.44/130,234.16 = 84,688.76/x
  3. Step 3: Cross multiply
    87,312.44x = 130,234.16 × 84,688.76
  4. Step 4: Simplify right side
    87,312.44x = 11,029,369,520.04
  5. Step 5: Solve for x
    x = 11,029,369,520.04/87,312.44
  6. Step 6: Final answer
    x = 126,320.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.