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Finding the Fourth Proportional to 101,666.60, 140,349.48 and 67,695.20

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Solution

The fourth proportional to 101,666.60, 140,349.48 and 67,695.20 is: 93,452.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,666.60 : 140,349.48 = 67,695.20 : x
  2. Step 2: Convert to fraction form
    101,666.60/140,349.48 = 67,695.20/x
  3. Step 3: Cross multiply
    101,666.60x = 140,349.48 × 67,695.20
  4. Step 4: Simplify right side
    101,666.60x = 9,500,986,118.50
  5. Step 5: Solve for x
    x = 9,500,986,118.50/101,666.60
  6. Step 6: Final answer
    x = 93,452.38

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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.