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Finding the Fourth Proportional to 180,228.79, 248,693.88 and 99,645.31

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Solution

The fourth proportional to 180,228.79, 248,693.88 and 99,645.31 is: 137,498.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,228.79 : 248,693.88 = 99,645.31 : x
  2. Step 2: Convert to fraction form
    180,228.79/248,693.88 = 99,645.31/x
  3. Step 3: Cross multiply
    180,228.79x = 248,693.88 × 99,645.31
  4. Step 4: Simplify right side
    180,228.79x = 24,781,178,767.70
  5. Step 5: Solve for x
    x = 24,781,178,767.70/180,228.79
  6. Step 6: Final answer
    x = 137,498.45

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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.