Home / 109,530.68-151,146.04-61,781.18

Finding the Fourth Proportional to 109,530.68, 151,146.04 and 61,781.18

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Solution

The fourth proportional to 109,530.68, 151,146.04 and 61,781.18 is: 85,254.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,530.68 : 151,146.04 = 61,781.18 : x
  2. Step 2: Convert to fraction form
    109,530.68/151,146.04 = 61,781.18/x
  3. Step 3: Cross multiply
    109,530.68x = 151,146.04 × 61,781.18
  4. Step 4: Simplify right side
    109,530.68x = 9,337,980,703.53
  5. Step 5: Solve for x
    x = 9,337,980,703.53/109,530.68
  6. Step 6: Final answer
    x = 85,254.48

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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.