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Finding the Fourth Proportional to 99,299.80, 148,949.70 and 63,870.40

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Solution

The fourth proportional to 99,299.80, 148,949.70 and 63,870.40 is: 95,805.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,299.80 : 148,949.70 = 63,870.40 : x
  2. Step 2: Convert to fraction form
    99,299.80/148,949.70 = 63,870.40/x
  3. Step 3: Cross multiply
    99,299.80x = 148,949.70 × 63,870.40
  4. Step 4: Simplify right side
    99,299.80x = 9,513,476,918.88
  5. Step 5: Solve for x
    x = 9,513,476,918.88/99,299.80
  6. Step 6: Final answer
    x = 95,805.60

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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.