Home / 87,924.95-131,510.63-81,543.36

Finding the Fourth Proportional to 87,924.95, 131,510.63 and 81,543.36

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Solution

The fourth proportional to 87,924.95, 131,510.63 and 81,543.36 is: 121,965.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,924.95 : 131,510.63 = 81,543.36 : x
  2. Step 2: Convert to fraction form
    87,924.95/131,510.63 = 81,543.36/x
  3. Step 3: Cross multiply
    87,924.95x = 131,510.63 × 81,543.36
  4. Step 4: Simplify right side
    87,924.95x = 10,723,818,238.20
  5. Step 5: Solve for x
    x = 10,723,818,238.20/87,924.95
  6. Step 6: Final answer
    x = 121,965.60

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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.