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Finding the Fourth Proportional to 153,364.60, 230,057.70 and 86,836.60

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Solution

The fourth proportional to 153,364.60, 230,057.70 and 86,836.60 is: 130,261.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,364.60 : 230,057.70 = 86,836.60 : x
  2. Step 2: Convert to fraction form
    153,364.60/230,057.70 = 86,836.60/x
  3. Step 3: Cross multiply
    153,364.60x = 230,057.70 × 86,836.60
  4. Step 4: Simplify right side
    153,364.60x = 19,977,428,471.82
  5. Step 5: Solve for x
    x = 19,977,428,471.82/153,364.60
  6. Step 6: Final answer
    x = 130,261.02

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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.