Home / 147,549.76-203,572.51-87,141.78

Finding the Fourth Proportional to 147,549.76, 203,572.51 and 87,141.78

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Solution

The fourth proportional to 147,549.76, 203,572.51 and 87,141.78 is: 120,228.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,549.76 : 203,572.51 = 87,141.78 : x
  2. Step 2: Convert to fraction form
    147,549.76/203,572.51 = 87,141.78/x
  3. Step 3: Cross multiply
    147,549.76x = 203,572.51 × 87,141.78
  4. Step 4: Simplify right side
    147,549.76x = 17,739,670,662.61
  5. Step 5: Solve for x
    x = 17,739,670,662.61/147,549.76
  6. Step 6: Final answer
    x = 120,228.40

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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.