Home / 137,355.12-205,663.55-87,163.47

Finding the Fourth Proportional to 137,355.12, 205,663.55 and 87,163.47

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Solution

The fourth proportional to 137,355.12, 205,663.55 and 87,163.47 is: 130,510.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,355.12 : 205,663.55 = 87,163.47 : x
  2. Step 2: Convert to fraction form
    137,355.12/205,663.55 = 87,163.47/x
  3. Step 3: Cross multiply
    137,355.12x = 205,663.55 × 87,163.47
  4. Step 4: Simplify right side
    137,355.12x = 17,926,348,234.70
  5. Step 5: Solve for x
    x = 17,926,348,234.70/137,355.12
  6. Step 6: Final answer
    x = 130,510.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.