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Finding the Fourth Proportional to 94,295.67, 140,555.18 and 86,728.88

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Solution

The fourth proportional to 94,295.67, 140,555.18 and 86,728.88 is: 129,276.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,295.67 : 140,555.18 = 86,728.88 : x
  2. Step 2: Convert to fraction form
    94,295.67/140,555.18 = 86,728.88/x
  3. Step 3: Cross multiply
    94,295.67x = 140,555.18 × 86,728.88
  4. Step 4: Simplify right side
    94,295.67x = 12,190,193,117.19
  5. Step 5: Solve for x
    x = 12,190,193,117.19/94,295.67
  6. Step 6: Final answer
    x = 129,276.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.