Home / 99,711.66-149,566.86-42,777.16

Finding the Fourth Proportional to 99,711.66, 149,566.86 and 42,777.16

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Solution

The fourth proportional to 99,711.66, 149,566.86 and 42,777.16 is: 64,165.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,711.66 : 149,566.86 = 42,777.16 : x
  2. Step 2: Convert to fraction form
    99,711.66/149,566.86 = 42,777.16/x
  3. Step 3: Cross multiply
    99,711.66x = 149,566.86 × 42,777.16
  4. Step 4: Simplify right side
    99,711.66x = 6,398,045,500.92
  5. Step 5: Solve for x
    x = 6,398,045,500.92/99,711.66
  6. Step 6: Final answer
    x = 64,165.47

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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.