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Finding the Fourth Proportional to 100,955.20, 151,432.80 and 69,462.40

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Solution

The fourth proportional to 100,955.20, 151,432.80 and 69,462.40 is: 104,193.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,955.20 : 151,432.80 = 69,462.40 : x
  2. Step 2: Convert to fraction form
    100,955.20/151,432.80 = 69,462.40/x
  3. Step 3: Cross multiply
    100,955.20x = 151,432.80 × 69,462.40
  4. Step 4: Simplify right side
    100,955.20x = 10,518,885,726.72
  5. Step 5: Solve for x
    x = 10,518,885,726.72/100,955.20
  6. Step 6: Final answer
    x = 104,193.60

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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.