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Finding the Fourth Proportional to 101,470.56, 140,068.62 and 90,841.74

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Solution

The fourth proportional to 101,470.56, 140,068.62 and 90,841.74 is: 125,396.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,470.56 : 140,068.62 = 90,841.74 : x
  2. Step 2: Convert to fraction form
    101,470.56/140,068.62 = 90,841.74/x
  3. Step 3: Cross multiply
    101,470.56x = 140,068.62 × 90,841.74
  4. Step 4: Simplify right side
    101,470.56x = 12,724,077,160.20
  5. Step 5: Solve for x
    x = 12,724,077,160.20/101,470.56
  6. Step 6: Final answer
    x = 125,396.74

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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.