Home / 138,404.21-191,001.62-84,688.25

Finding the Fourth Proportional to 138,404.21, 191,001.62 and 84,688.25

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Solution

The fourth proportional to 138,404.21, 191,001.62 and 84,688.25 is: 116,872.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,404.21 : 191,001.62 = 84,688.25 : x
  2. Step 2: Convert to fraction form
    138,404.21/191,001.62 = 84,688.25/x
  3. Step 3: Cross multiply
    138,404.21x = 191,001.62 × 84,688.25
  4. Step 4: Simplify right side
    138,404.21x = 16,175,592,944.97
  5. Step 5: Solve for x
    x = 16,175,592,944.97/138,404.21
  6. Step 6: Final answer
    x = 116,872.12

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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.