Home / 131,288.95-181,177.82-71,672.95

Finding the Fourth Proportional to 131,288.95, 181,177.82 and 71,672.95

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Solution

The fourth proportional to 131,288.95, 181,177.82 and 71,672.95 is: 98,908.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,288.95 : 181,177.82 = 71,672.95 : x
  2. Step 2: Convert to fraction form
    131,288.95/181,177.82 = 71,672.95/x
  3. Step 3: Cross multiply
    131,288.95x = 181,177.82 × 71,672.95
  4. Step 4: Simplify right side
    131,288.95x = 12,985,547,928.08
  5. Step 5: Solve for x
    x = 12,985,547,928.08/131,288.95
  6. Step 6: Final answer
    x = 98,908.16

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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.