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Finding the Fourth Proportional to 91,937.94, 126,889.14 and 85,934.64

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Solution

The fourth proportional to 91,937.94, 126,889.14 and 85,934.64 is: 118,603.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,937.94 : 126,889.14 = 85,934.64 : x
  2. Step 2: Convert to fraction form
    91,937.94/126,889.14 = 85,934.64/x
  3. Step 3: Cross multiply
    91,937.94x = 126,889.14 × 85,934.64
  4. Step 4: Simplify right side
    91,937.94x = 10,904,172,565.81
  5. Step 5: Solve for x
    x = 10,904,172,565.81/91,937.94
  6. Step 6: Final answer
    x = 118,603.62

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1.5x scale

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.