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Finding the Fourth Proportional to 178,763.16, 268,141.26 and 72,144.28

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Solution

The fourth proportional to 178,763.16, 268,141.26 and 72,144.28 is: 108,215.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,763.16 : 268,141.26 = 72,144.28 : x
  2. Step 2: Convert to fraction form
    178,763.16/268,141.26 = 72,144.28/x
  3. Step 3: Cross multiply
    178,763.16x = 268,141.26 × 72,144.28
  4. Step 4: Simplify right side
    178,763.16x = 19,344,857,741.18
  5. Step 5: Solve for x
    x = 19,344,857,741.18/178,763.16
  6. Step 6: Final answer
    x = 108,215.01

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1.5x scale

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.