Home / 143,545.68-198,113.40-86,187.60

Finding the Fourth Proportional to 143,545.68, 198,113.40 and 86,187.60

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Solution

The fourth proportional to 143,545.68, 198,113.40 and 86,187.60 is: 118,951.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,545.68 : 198,113.40 = 86,187.60 : x
  2. Step 2: Convert to fraction form
    143,545.68/198,113.40 = 86,187.60/x
  3. Step 3: Cross multiply
    143,545.68x = 198,113.40 × 86,187.60
  4. Step 4: Simplify right side
    143,545.68x = 17,074,918,473.84
  5. Step 5: Solve for x
    x = 17,074,918,473.84/143,545.68
  6. Step 6: Final answer
    x = 118,951.11

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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.