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Finding the Fourth Proportional to 92,498.78, 138,762.65 and 39,190.86

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Solution

The fourth proportional to 92,498.78, 138,762.65 and 39,190.86 is: 58,792.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,498.78 : 138,762.65 = 39,190.86 : x
  2. Step 2: Convert to fraction form
    92,498.78/138,762.65 = 39,190.86/x
  3. Step 3: Cross multiply
    92,498.78x = 138,762.65 × 39,190.86
  4. Step 4: Simplify right side
    92,498.78x = 5,438,227,687.36
  5. Step 5: Solve for x
    x = 5,438,227,687.36/92,498.78
  6. Step 6: Final answer
    x = 58,792.42

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1.5x scale

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.