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Finding the Fourth Proportional to 152,040.78, 209,849.58 and 88,415.28

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Solution

The fourth proportional to 152,040.78, 209,849.58 and 88,415.28 is: 122,032.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,040.78 : 209,849.58 = 88,415.28 : x
  2. Step 2: Convert to fraction form
    152,040.78/209,849.58 = 88,415.28/x
  3. Step 3: Cross multiply
    152,040.78x = 209,849.58 × 88,415.28
  4. Step 4: Simplify right side
    152,040.78x = 18,553,909,373.58
  5. Step 5: Solve for x
    x = 18,553,909,373.58/152,040.78
  6. Step 6: Final answer
    x = 122,032.45

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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.