Home / 115,639.95-159,610.10-75,283.77

Finding the Fourth Proportional to 115,639.95, 159,610.10 and 75,283.77

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Solution

The fourth proportional to 115,639.95, 159,610.10 and 75,283.77 is: 103,909.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,639.95 : 159,610.10 = 75,283.77 : x
  2. Step 2: Convert to fraction form
    115,639.95/159,610.10 = 75,283.77/x
  3. Step 3: Cross multiply
    115,639.95x = 159,610.10 × 75,283.77
  4. Step 4: Simplify right side
    115,639.95x = 12,016,049,681.66
  5. Step 5: Solve for x
    x = 12,016,049,681.66/115,639.95
  6. Step 6: Final answer
    x = 103,909.16

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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.