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Finding the Fourth Proportional to 98,279.60, 147,418.58 and 28,158.98

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Solution

The fourth proportional to 98,279.60, 147,418.58 and 28,158.98 is: 42,238.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,279.60 : 147,418.58 = 28,158.98 : x
  2. Step 2: Convert to fraction form
    98,279.60/147,418.58 = 28,158.98/x
  3. Step 3: Cross multiply
    98,279.60x = 147,418.58 × 28,158.98
  4. Step 4: Simplify right side
    98,279.60x = 4,151,155,967.96
  5. Step 5: Solve for x
    x = 4,151,155,967.96/98,279.60
  6. Step 6: Final answer
    x = 42,238.23

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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.