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Finding the Fourth Proportional to 100,388.70, 150,291.45 and 97,472.70

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Solution

The fourth proportional to 100,388.70, 150,291.45 and 97,472.70 is: 145,925.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,388.70 : 150,291.45 = 97,472.70 : x
  2. Step 2: Convert to fraction form
    100,388.70/150,291.45 = 97,472.70/x
  3. Step 3: Cross multiply
    100,388.70x = 150,291.45 × 97,472.70
  4. Step 4: Simplify right side
    100,388.70x = 14,649,313,418.42
  5. Step 5: Solve for x
    x = 14,649,313,418.42/100,388.70
  6. Step 6: Final answer
    x = 145,925.92

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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.