Home / 146,534.80-219,802.20-86,659.60

Finding the Fourth Proportional to 146,534.80, 219,802.20 and 86,659.60

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Solution

The fourth proportional to 146,534.80, 219,802.20 and 86,659.60 is: 129,989.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,534.80 : 219,802.20 = 86,659.60 : x
  2. Step 2: Convert to fraction form
    146,534.80/219,802.20 = 86,659.60/x
  3. Step 3: Cross multiply
    146,534.80x = 219,802.20 × 86,659.60
  4. Step 4: Simplify right side
    146,534.80x = 19,047,970,731.12
  5. Step 5: Solve for x
    x = 19,047,970,731.12/146,534.80
  6. Step 6: Final answer
    x = 129,989.40

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1.5x scale

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.