Home / 153,221.02-229,541.72-86,708.88

Finding the Fourth Proportional to 153,221.02, 229,541.72 and 86,708.88

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Solution

The fourth proportional to 153,221.02, 229,541.72 and 86,708.88 is: 129,899.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,221.02 : 229,541.72 = 86,708.88 : x
  2. Step 2: Convert to fraction form
    153,221.02/229,541.72 = 86,708.88/x
  3. Step 3: Cross multiply
    153,221.02x = 229,541.72 × 86,708.88
  4. Step 4: Simplify right side
    153,221.02x = 19,903,305,020.93
  5. Step 5: Solve for x
    x = 19,903,305,020.93/153,221.02
  6. Step 6: Final answer
    x = 129,899.31

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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.