Home / 102,266.64-153,195.75-81,242.28

Finding the Fourth Proportional to 102,266.64, 153,195.75 and 81,242.28

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Solution

The fourth proportional to 102,266.64, 153,195.75 and 81,242.28 is: 121,701.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,266.64 : 153,195.75 = 81,242.28 : x
  2. Step 2: Convert to fraction form
    102,266.64/153,195.75 = 81,242.28/x
  3. Step 3: Cross multiply
    102,266.64x = 153,195.75 × 81,242.28
  4. Step 4: Simplify right side
    102,266.64x = 12,445,972,016.31
  5. Step 5: Solve for x
    x = 12,445,972,016.31/102,266.64
  6. Step 6: Final answer
    x = 121,701.19

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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.