Home / 99,432.32-137,215.16-54,720.32

Finding the Fourth Proportional to 99,432.32, 137,215.16 and 54,720.32

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Solution

The fourth proportional to 99,432.32, 137,215.16 and 54,720.32 is: 75,513.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,432.32 : 137,215.16 = 54,720.32 : x
  2. Step 2: Convert to fraction form
    99,432.32/137,215.16 = 54,720.32/x
  3. Step 3: Cross multiply
    99,432.32x = 137,215.16 × 54,720.32
  4. Step 4: Simplify right side
    99,432.32x = 7,508,456,504.37
  5. Step 5: Solve for x
    x = 7,508,456,504.37/99,432.32
  6. Step 6: Final answer
    x = 75,513.24

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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.