Home / 89,831.61-134,840.87-66,165.88

Finding the Fourth Proportional to 89,831.61, 134,840.87 and 66,165.88

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Solution

The fourth proportional to 89,831.61, 134,840.87 and 66,165.88 is: 99,317.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,831.61 : 134,840.87 = 66,165.88 : x
  2. Step 2: Convert to fraction form
    89,831.61/134,840.87 = 66,165.88/x
  3. Step 3: Cross multiply
    89,831.61x = 134,840.87 × 66,165.88
  4. Step 4: Simplify right side
    89,831.61x = 8,921,864,149.31
  5. Step 5: Solve for x
    x = 8,921,864,149.31/89,831.61
  6. Step 6: Final answer
    x = 99,317.65

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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.