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Finding the Fourth Proportional to 177,978.84, 245,612.28 and 109,980.30

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Solution

The fourth proportional to 177,978.84, 245,612.28 and 109,980.30 is: 151,773.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,978.84 : 245,612.28 = 109,980.30 : x
  2. Step 2: Convert to fraction form
    177,978.84/245,612.28 = 109,980.30/x
  3. Step 3: Cross multiply
    177,978.84x = 245,612.28 × 109,980.30
  4. Step 4: Simplify right side
    177,978.84x = 27,012,512,238.08
  5. Step 5: Solve for x
    x = 27,012,512,238.08/177,978.84
  6. Step 6: Final answer
    x = 151,773.73

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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.