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Finding the Fourth Proportional to 207,158.72, 285,717.06 and 134,585

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Solution

The fourth proportional to 207,158.72, 285,717.06 and 134,585 is: 185,622.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,158.72 : 285,717.06 = 134,585 : x
  2. Step 2: Convert to fraction form
    207,158.72/285,717.06 = 134,585/x
  3. Step 3: Cross multiply
    207,158.72x = 285,717.06 × 134,585
  4. Step 4: Simplify right side
    207,158.72x = 38,453,230,520.10
  5. Step 5: Solve for x
    x = 38,453,230,520.10/207,158.72
  6. Step 6: Final answer
    x = 185,622.07

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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.