Home / 115,342.08-159,177.60-65,040

Finding the Fourth Proportional to 115,342.08, 159,177.60 and 65,040

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Solution

The fourth proportional to 115,342.08, 159,177.60 and 65,040 is: 89,758.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,342.08 : 159,177.60 = 65,040 : x
  2. Step 2: Convert to fraction form
    115,342.08/159,177.60 = 65,040/x
  3. Step 3: Cross multiply
    115,342.08x = 159,177.60 × 65,040
  4. Step 4: Simplify right side
    115,342.08x = 10,352,911,104
  5. Step 5: Solve for x
    x = 10,352,911,104/115,342.08
  6. Step 6: Final answer
    x = 89,758.32

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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.