Home / 100,218.24-138,304.80-55,506.24

Finding the Fourth Proportional to 100,218.24, 138,304.80 and 55,506.24

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Solution

The fourth proportional to 100,218.24, 138,304.80 and 55,506.24 is: 76,600.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,218.24 : 138,304.80 = 55,506.24 : x
  2. Step 2: Convert to fraction form
    100,218.24/138,304.80 = 55,506.24/x
  3. Step 3: Cross multiply
    100,218.24x = 138,304.80 × 55,506.24
  4. Step 4: Simplify right side
    100,218.24x = 7,676,779,421.95
  5. Step 5: Solve for x
    x = 7,676,779,421.95/100,218.24
  6. Step 6: Final answer
    x = 76,600.62

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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.