Home / 147,116.40-220,237.20-87,921.60

Finding the Fourth Proportional to 147,116.40, 220,237.20 and 87,921.60

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Solution

The fourth proportional to 147,116.40, 220,237.20 and 87,921.60 is: 131,621.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,116.40 : 220,237.20 = 87,921.60 : x
  2. Step 2: Convert to fraction form
    147,116.40/220,237.20 = 87,921.60/x
  3. Step 3: Cross multiply
    147,116.40x = 220,237.20 × 87,921.60
  4. Step 4: Simplify right side
    147,116.40x = 19,363,607,003.52
  5. Step 5: Solve for x
    x = 19,363,607,003.52/147,116.40
  6. Step 6: Final answer
    x = 131,621.00

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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.