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Finding the Fourth Proportional to 159,312.45, 219,825.46 and 91,316.91

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Solution

The fourth proportional to 159,312.45, 219,825.46 and 91,316.91 is: 126,002.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,312.45 : 219,825.46 = 91,316.91 : x
  2. Step 2: Convert to fraction form
    159,312.45/219,825.46 = 91,316.91/x
  3. Step 3: Cross multiply
    159,312.45x = 219,825.46 × 91,316.91
  4. Step 4: Simplify right side
    159,312.45x = 20,073,782,685.02
  5. Step 5: Solve for x
    x = 20,073,782,685.02/159,312.45
  6. Step 6: Final answer
    x = 126,002.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.