Home / 145,102.29-200,230.18-81,427.78

Finding the Fourth Proportional to 145,102.29, 200,230.18 and 81,427.78

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Solution

The fourth proportional to 145,102.29, 200,230.18 and 81,427.78 is: 112,364.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,102.29 : 200,230.18 = 81,427.78 : x
  2. Step 2: Convert to fraction form
    145,102.29/200,230.18 = 81,427.78/x
  3. Step 3: Cross multiply
    145,102.29x = 200,230.18 × 81,427.78
  4. Step 4: Simplify right side
    145,102.29x = 16,304,299,093.12
  5. Step 5: Solve for x
    x = 16,304,299,093.12/145,102.29
  6. Step 6: Final answer
    x = 112,364.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.