Home / 138,599.83-191,185.18-87,522.45

Finding the Fourth Proportional to 138,599.83, 191,185.18 and 87,522.45

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Solution

The fourth proportional to 138,599.83, 191,185.18 and 87,522.45 is: 120,728.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,599.83 : 191,185.18 = 87,522.45 : x
  2. Step 2: Convert to fraction form
    138,599.83/191,185.18 = 87,522.45/x
  3. Step 3: Cross multiply
    138,599.83x = 191,185.18 × 87,522.45
  4. Step 4: Simplify right side
    138,599.83x = 16,732,995,357.29
  5. Step 5: Solve for x
    x = 16,732,995,357.29/138,599.83
  6. Step 6: Final answer
    x = 120,728.83

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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.