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Finding the Fourth Proportional to 102,370.60, 153,555.90 and 66,941.20

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Solution

The fourth proportional to 102,370.60, 153,555.90 and 66,941.20 is: 100,411.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,370.60 : 153,555.90 = 66,941.20 : x
  2. Step 2: Convert to fraction form
    102,370.60/153,555.90 = 66,941.20/x
  3. Step 3: Cross multiply
    102,370.60x = 153,555.90 × 66,941.20
  4. Step 4: Simplify right side
    102,370.60x = 10,279,216,213.08
  5. Step 5: Solve for x
    x = 10,279,216,213.08/102,370.60
  6. Step 6: Final answer
    x = 100,411.80

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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.