Home / 97,821.20-146,602.20-86,675.60

Finding the Fourth Proportional to 97,821.20, 146,602.20 and 86,675.60

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Solution

The fourth proportional to 97,821.20, 146,602.20 and 86,675.60 is: 129,898.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,821.20 : 146,602.20 = 86,675.60 : x
  2. Step 2: Convert to fraction form
    97,821.20/146,602.20 = 86,675.60/x
  3. Step 3: Cross multiply
    97,821.20x = 146,602.20 × 86,675.60
  4. Step 4: Simplify right side
    97,821.20x = 12,706,833,646.32
  5. Step 5: Solve for x
    x = 12,706,833,646.32/97,821.20
  6. Step 6: Final answer
    x = 129,898.57

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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.