Home / 99,108.48-136,768-54,396.16

Finding the Fourth Proportional to 99,108.48, 136,768 and 54,396.16

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Solution

The fourth proportional to 99,108.48, 136,768 and 54,396.16 is: 75,065.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,108.48 : 136,768 = 54,396.16 : x
  2. Step 2: Convert to fraction form
    99,108.48/136,768 = 54,396.16/x
  3. Step 3: Cross multiply
    99,108.48x = 136,768 × 54,396.16
  4. Step 4: Simplify right side
    99,108.48x = 7,439,654,010.88
  5. Step 5: Solve for x
    x = 7,439,654,010.88/99,108.48
  6. Step 6: Final answer
    x = 75,065.77

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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.