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Finding the Fourth Proportional to 92,215.90, 138,129.45 and 92,215.90

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Solution

The fourth proportional to 92,215.90, 138,129.45 and 92,215.90 is: 138,129.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,215.90 : 138,129.45 = 92,215.90 : x
  2. Step 2: Convert to fraction form
    92,215.90/138,129.45 = 92,215.90/x
  3. Step 3: Cross multiply
    92,215.90x = 138,129.45 × 92,215.90
  4. Step 4: Simplify right side
    92,215.90x = 12,737,731,548.26
  5. Step 5: Solve for x
    x = 12,737,731,548.26/92,215.90
  6. Step 6: Final answer
    x = 138,129.45

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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.