Home / 109,665.96-151,335.72-61,916.48

Finding the Fourth Proportional to 109,665.96, 151,335.72 and 61,916.48

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Solution

The fourth proportional to 109,665.96, 151,335.72 and 61,916.48 is: 85,442.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,665.96 : 151,335.72 = 61,916.48 : x
  2. Step 2: Convert to fraction form
    109,665.96/151,335.72 = 61,916.48/x
  3. Step 3: Cross multiply
    109,665.96x = 151,335.72 × 61,916.48
  4. Step 4: Simplify right side
    109,665.96x = 9,370,175,080.67
  5. Step 5: Solve for x
    x = 9,370,175,080.67/109,665.96
  6. Step 6: Final answer
    x = 85,442.88

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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.