Home / 109,478.94-151,080.69-61,731.95

Finding the Fourth Proportional to 109,478.94, 151,080.69 and 61,731.95

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Solution

The fourth proportional to 109,478.94, 151,080.69 and 61,731.95 is: 85,189.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,478.94 : 151,080.69 = 61,731.95 : x
  2. Step 2: Convert to fraction form
    109,478.94/151,080.69 = 61,731.95/x
  3. Step 3: Cross multiply
    109,478.94x = 151,080.69 × 61,731.95
  4. Step 4: Simplify right side
    109,478.94x = 9,326,505,502.05
  5. Step 5: Solve for x
    x = 9,326,505,502.05/109,478.94
  6. Step 6: Final answer
    x = 85,189.95

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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.