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Finding the Fourth Proportional to 173,772.60, 239,815.56 and 105,778.80

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Solution

The fourth proportional to 173,772.60, 239,815.56 and 105,778.80 is: 145,980.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,772.60 : 239,815.56 = 105,778.80 : x
  2. Step 2: Convert to fraction form
    173,772.60/239,815.56 = 105,778.80/x
  3. Step 3: Cross multiply
    173,772.60x = 239,815.56 × 105,778.80
  4. Step 4: Simplify right side
    173,772.60x = 25,367,402,158.13
  5. Step 5: Solve for x
    x = 25,367,402,158.13/173,772.60
  6. Step 6: Final answer
    x = 145,980.45

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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.