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Finding the Fourth Proportional to 102,159.01, 140,899.55 and 66,360.55

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Solution

The fourth proportional to 102,159.01, 140,899.55 and 66,360.55 is: 91,525.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,159.01 : 140,899.55 = 66,360.55 : x
  2. Step 2: Convert to fraction form
    102,159.01/140,899.55 = 66,360.55/x
  3. Step 3: Cross multiply
    102,159.01x = 140,899.55 × 66,360.55
  4. Step 4: Simplify right side
    102,159.01x = 9,350,170,948.70
  5. Step 5: Solve for x
    x = 9,350,170,948.70/102,159.01
  6. Step 6: Final answer
    x = 91,525.66

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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.