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Finding the Fourth Proportional to 160,591.70, 221,720.53 and 103,256.77

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Solution

The fourth proportional to 160,591.70, 221,720.53 and 103,256.77 is: 142,561.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,591.70 : 221,720.53 = 103,256.77 : x
  2. Step 2: Convert to fraction form
    160,591.70/221,720.53 = 103,256.77/x
  3. Step 3: Cross multiply
    160,591.70x = 221,720.53 × 103,256.77
  4. Step 4: Simplify right side
    160,591.70x = 22,894,145,770.49
  5. Step 5: Solve for x
    x = 22,894,145,770.49/160,591.70
  6. Step 6: Final answer
    x = 142,561.20

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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.