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Finding the Fourth Proportional to 92,030.30, 138,045.45 and 81,532.70

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Solution

The fourth proportional to 92,030.30, 138,045.45 and 81,532.70 is: 122,299.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,030.30 : 138,045.45 = 81,532.70 : x
  2. Step 2: Convert to fraction form
    92,030.30/138,045.45 = 81,532.70/x
  3. Step 3: Cross multiply
    92,030.30x = 138,045.45 × 81,532.70
  4. Step 4: Simplify right side
    92,030.30x = 11,255,218,261.22
  5. Step 5: Solve for x
    x = 11,255,218,261.22/92,030.30
  6. Step 6: Final answer
    x = 122,299.05

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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.