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Finding the Fourth Proportional to 99,290.40, 148,935.60 and 98,599.20

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Solution

The fourth proportional to 99,290.40, 148,935.60 and 98,599.20 is: 147,898.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,290.40 : 148,935.60 = 98,599.20 : x
  2. Step 2: Convert to fraction form
    99,290.40/148,935.60 = 98,599.20/x
  3. Step 3: Cross multiply
    99,290.40x = 148,935.60 × 98,599.20
  4. Step 4: Simplify right side
    99,290.40x = 14,684,931,011.52
  5. Step 5: Solve for x
    x = 14,684,931,011.52/99,290.40
  6. Step 6: Final answer
    x = 147,898.80

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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.