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Finding the Fourth Proportional to 118,967.76, 178,412.32 and 40,062.40

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Solution

The fourth proportional to 118,967.76, 178,412.32 and 40,062.40 is: 60,080.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,967.76 : 178,412.32 = 40,062.40 : x
  2. Step 2: Convert to fraction form
    118,967.76/178,412.32 = 40,062.40/x
  3. Step 3: Cross multiply
    118,967.76x = 178,412.32 × 40,062.40
  4. Step 4: Simplify right side
    118,967.76x = 7,147,625,728.77
  5. Step 5: Solve for x
    x = 7,147,625,728.77/118,967.76
  6. Step 6: Final answer
    x = 60,080.36

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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.