Home / 104,928.90-157,335.64-71,686.50

Finding the Fourth Proportional to 104,928.90, 157,335.64 and 71,686.50

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Solution

The fourth proportional to 104,928.90, 157,335.64 and 71,686.50 is: 107,490.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,928.90 : 157,335.64 = 71,686.50 : x
  2. Step 2: Convert to fraction form
    104,928.90/157,335.64 = 71,686.50/x
  3. Step 3: Cross multiply
    104,928.90x = 157,335.64 × 71,686.50
  4. Step 4: Simplify right side
    104,928.90x = 11,278,841,177.64
  5. Step 5: Solve for x
    x = 11,278,841,177.64/104,928.90
  6. Step 6: Final answer
    x = 107,490.32

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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.