Home / 243,000.95-335,340.81-135,564.57

Finding the Fourth Proportional to 243,000.95, 335,340.81 and 135,564.57

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Solution

The fourth proportional to 243,000.95, 335,340.81 and 135,564.57 is: 187,078.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,000.95 : 335,340.81 = 135,564.57 : x
  2. Step 2: Convert to fraction form
    243,000.95/335,340.81 = 135,564.57/x
  3. Step 3: Cross multiply
    243,000.95x = 335,340.81 × 135,564.57
  4. Step 4: Simplify right side
    243,000.95x = 45,460,332,711.10
  5. Step 5: Solve for x
    x = 45,460,332,711.10/243,000.95
  6. Step 6: Final answer
    x = 187,078.83

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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.