Home / 147,211.28-203,178.06-86,778.32

Finding the Fourth Proportional to 147,211.28, 203,178.06 and 86,778.32

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Solution

The fourth proportional to 147,211.28, 203,178.06 and 86,778.32 is: 119,769.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,211.28 : 203,178.06 = 86,778.32 : x
  2. Step 2: Convert to fraction form
    147,211.28/203,178.06 = 86,778.32/x
  3. Step 3: Cross multiply
    147,211.28x = 203,178.06 × 86,778.32
  4. Step 4: Simplify right side
    147,211.28x = 17,631,450,707.66
  5. Step 5: Solve for x
    x = 17,631,450,707.66/147,211.28
  6. Step 6: Final answer
    x = 119,769.70

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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.