Home / 100,344.18-138,476.04-57,329.40

Finding the Fourth Proportional to 100,344.18, 138,476.04 and 57,329.40

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Solution

The fourth proportional to 100,344.18, 138,476.04 and 57,329.40 is: 79,115.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,344.18 : 138,476.04 = 57,329.40 : x
  2. Step 2: Convert to fraction form
    100,344.18/138,476.04 = 57,329.40/x
  3. Step 3: Cross multiply
    100,344.18x = 138,476.04 × 57,329.40
  4. Step 4: Simplify right side
    100,344.18x = 7,938,748,287.58
  5. Step 5: Solve for x
    x = 7,938,748,287.58/100,344.18
  6. Step 6: Final answer
    x = 79,115.18

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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.