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Finding the Fourth Proportional to 118,921.66, 178,359.80 and 59,740.90

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Solution

The fourth proportional to 118,921.66, 178,359.80 and 59,740.90 is: 89,599.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,921.66 : 178,359.80 = 59,740.90 : x
  2. Step 2: Convert to fraction form
    118,921.66/178,359.80 = 59,740.90/x
  3. Step 3: Cross multiply
    118,921.66x = 178,359.80 × 59,740.90
  4. Step 4: Simplify right side
    118,921.66x = 10,655,374,975.82
  5. Step 5: Solve for x
    x = 10,655,374,975.82/118,921.66
  6. Step 6: Final answer
    x = 89,599.95

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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.