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Finding the Fourth Proportional to 118,978.20, 178,424.10 and 59,794.20

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Solution

The fourth proportional to 118,978.20, 178,424.10 and 59,794.20 is: 89,669.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,978.20 : 178,424.10 = 59,794.20 : x
  2. Step 2: Convert to fraction form
    118,978.20/178,424.10 = 59,794.20/x
  3. Step 3: Cross multiply
    118,978.20x = 178,424.10 × 59,794.20
  4. Step 4: Simplify right side
    118,978.20x = 10,668,726,320.22
  5. Step 5: Solve for x
    x = 10,668,726,320.22/118,978.20
  6. Step 6: Final answer
    x = 89,669.59

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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.