Home / 100,444.53-138,612.17-55,122.93

Finding the Fourth Proportional to 100,444.53, 138,612.17 and 55,122.93

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Solution

The fourth proportional to 100,444.53, 138,612.17 and 55,122.93 is: 76,068.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,444.53 : 138,612.17 = 55,122.93 : x
  2. Step 2: Convert to fraction form
    100,444.53/138,612.17 = 55,122.93/x
  3. Step 3: Cross multiply
    100,444.53x = 138,612.17 × 55,122.93
  4. Step 4: Simplify right side
    100,444.53x = 7,640,708,668.44
  5. Step 5: Solve for x
    x = 7,640,708,668.44/100,444.53
  6. Step 6: Final answer
    x = 76,068.94

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1.5x scale

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.