Home / 117,428.61-162,050.55-66,440.91

Finding the Fourth Proportional to 117,428.61, 162,050.55 and 66,440.91

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Solution

The fourth proportional to 117,428.61, 162,050.55 and 66,440.91 is: 91,687.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,428.61 : 162,050.55 = 66,440.91 : x
  2. Step 2: Convert to fraction form
    117,428.61/162,050.55 = 66,440.91/x
  3. Step 3: Cross multiply
    117,428.61x = 162,050.55 × 66,440.91
  4. Step 4: Simplify right side
    117,428.61x = 10,766,785,641.87
  5. Step 5: Solve for x
    x = 10,766,785,641.87/117,428.61
  6. Step 6: Final answer
    x = 91,687.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.