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Finding the Fourth Proportional to 99,339.60, 148,894.20 and 40,136.40

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Solution

The fourth proportional to 99,339.60, 148,894.20 and 40,136.40 is: 60,158.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,339.60 : 148,894.20 = 40,136.40 : x
  2. Step 2: Convert to fraction form
    99,339.60/148,894.20 = 40,136.40/x
  3. Step 3: Cross multiply
    99,339.60x = 148,894.20 × 40,136.40
  4. Step 4: Simplify right side
    99,339.60x = 5,976,077,168.88
  5. Step 5: Solve for x
    x = 5,976,077,168.88/99,339.60
  6. Step 6: Final answer
    x = 60,158.06

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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.