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Finding the Fourth Proportional to 160,685.78, 240,931.46 and 71,922.74

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Solution

The fourth proportional to 160,685.78, 240,931.46 and 71,922.74 is: 107,840.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,685.78 : 240,931.46 = 71,922.74 : x
  2. Step 2: Convert to fraction form
    160,685.78/240,931.46 = 71,922.74/x
  3. Step 3: Cross multiply
    160,685.78x = 240,931.46 × 71,922.74
  4. Step 4: Simplify right side
    160,685.78x = 17,328,449,730.55
  5. Step 5: Solve for x
    x = 17,328,449,730.55/160,685.78
  6. Step 6: Final answer
    x = 107,840.60

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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.