Home / 143,569.56-198,133.02-86,986.20

Finding the Fourth Proportional to 143,569.56, 198,133.02 and 86,986.20

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Solution

The fourth proportional to 143,569.56, 198,133.02 and 86,986.20 is: 120,045.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,569.56 : 198,133.02 = 86,986.20 : x
  2. Step 2: Convert to fraction form
    143,569.56/198,133.02 = 86,986.20/x
  3. Step 3: Cross multiply
    143,569.56x = 198,133.02 × 86,986.20
  4. Step 4: Simplify right side
    143,569.56x = 17,234,838,504.32
  5. Step 5: Solve for x
    x = 17,234,838,504.32/143,569.56
  6. Step 6: Final answer
    x = 120,045.21

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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.