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Finding the Fourth Proportional to 99,273.80, 148,910.70 and 79,590.80

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Solution

The fourth proportional to 99,273.80, 148,910.70 and 79,590.80 is: 119,386.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,273.80 : 148,910.70 = 79,590.80 : x
  2. Step 2: Convert to fraction form
    99,273.80/148,910.70 = 79,590.80/x
  3. Step 3: Cross multiply
    99,273.80x = 148,910.70 × 79,590.80
  4. Step 4: Simplify right side
    99,273.80x = 11,851,921,741.56
  5. Step 5: Solve for x
    x = 11,851,921,741.56/99,273.80
  6. Step 6: Final answer
    x = 119,386.20

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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.