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Finding the Fourth Proportional to 159,681.67, 220,363.88 and 103,191.46

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Solution

The fourth proportional to 159,681.67, 220,363.88 and 103,191.46 is: 142,406.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,681.67 : 220,363.88 = 103,191.46 : x
  2. Step 2: Convert to fraction form
    159,681.67/220,363.88 = 103,191.46/x
  3. Step 3: Cross multiply
    159,681.67x = 220,363.88 × 103,191.46
  4. Step 4: Simplify right side
    159,681.67x = 22,739,669,441.60
  5. Step 5: Solve for x
    x = 22,739,669,441.60/159,681.67
  6. Step 6: Final answer
    x = 142,406.26

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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.