Home / 99,465.12-137,263.61-54,144.40

Finding the Fourth Proportional to 99,465.12, 137,263.61 and 54,144.40

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Solution

The fourth proportional to 99,465.12, 137,263.61 and 54,144.40 is: 74,720.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,465.12 : 137,263.61 = 54,144.40 : x
  2. Step 2: Convert to fraction form
    99,465.12/137,263.61 = 54,144.40/x
  3. Step 3: Cross multiply
    99,465.12x = 137,263.61 × 54,144.40
  4. Step 4: Simplify right side
    99,465.12x = 7,432,055,805.28
  5. Step 5: Solve for x
    x = 7,432,055,805.28/99,465.12
  6. Step 6: Final answer
    x = 74,720.22

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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.