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Finding the Fourth Proportional to 99,266.70, 148,900.05 and 77,148.30

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Solution

The fourth proportional to 99,266.70, 148,900.05 and 77,148.30 is: 115,722.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,266.70 : 148,900.05 = 77,148.30 : x
  2. Step 2: Convert to fraction form
    99,266.70/148,900.05 = 77,148.30/x
  3. Step 3: Cross multiply
    99,266.70x = 148,900.05 × 77,148.30
  4. Step 4: Simplify right side
    99,266.70x = 11,487,385,727.42
  5. Step 5: Solve for x
    x = 11,487,385,727.42/99,266.70
  6. Step 6: Final answer
    x = 115,722.45

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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.