Home / 143,699.28-198,312.96-86,356.14

Finding the Fourth Proportional to 143,699.28, 198,312.96 and 86,356.14

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Solution

The fourth proportional to 143,699.28, 198,312.96 and 86,356.14 is: 119,176.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,699.28 : 198,312.96 = 86,356.14 : x
  2. Step 2: Convert to fraction form
    143,699.28/198,312.96 = 86,356.14/x
  3. Step 3: Cross multiply
    143,699.28x = 198,312.96 × 86,356.14
  4. Step 4: Simplify right side
    143,699.28x = 17,125,541,737.57
  5. Step 5: Solve for x
    x = 17,125,541,737.57/143,699.28
  6. Step 6: Final answer
    x = 119,176.25

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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.