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Finding the Fourth Proportional to 99,045.45, 148,412.12 and 76,610.97

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Solution

The fourth proportional to 99,045.45, 148,412.12 and 76,610.97 is: 114,795.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,045.45 : 148,412.12 = 76,610.97 : x
  2. Step 2: Convert to fraction form
    99,045.45/148,412.12 = 76,610.97/x
  3. Step 3: Cross multiply
    99,045.45x = 148,412.12 × 76,610.97
  4. Step 4: Simplify right side
    99,045.45x = 11,369,996,089.90
  5. Step 5: Solve for x
    x = 11,369,996,089.90/99,045.45
  6. Step 6: Final answer
    x = 114,795.74

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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.