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Finding the Fourth Proportional to 99,300.20, 148,950.30 and 43,167.20

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Solution

The fourth proportional to 99,300.20, 148,950.30 and 43,167.20 is: 64,750.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,300.20 : 148,950.30 = 43,167.20 : x
  2. Step 2: Convert to fraction form
    99,300.20/148,950.30 = 43,167.20/x
  3. Step 3: Cross multiply
    99,300.20x = 148,950.30 × 43,167.20
  4. Step 4: Simplify right side
    99,300.20x = 6,429,767,390.16
  5. Step 5: Solve for x
    x = 6,429,767,390.16/99,300.20
  6. Step 6: Final answer
    x = 64,750.80

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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.