Home / 109,479.51-151,079.71-61,732.89

Finding the Fourth Proportional to 109,479.51, 151,079.71 and 61,732.89

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Solution

The fourth proportional to 109,479.51, 151,079.71 and 61,732.89 is: 85,190.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,479.51 : 151,079.71 = 61,732.89 : x
  2. Step 2: Convert to fraction form
    109,479.51/151,079.71 = 61,732.89/x
  3. Step 3: Cross multiply
    109,479.51x = 151,079.71 × 61,732.89
  4. Step 4: Simplify right side
    109,479.51x = 9,326,587,187.70
  5. Step 5: Solve for x
    x = 9,326,587,187.70/109,479.51
  6. Step 6: Final answer
    x = 85,190.26

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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.