Home / 156,964.73-235,328.53-80,981.87

Finding the Fourth Proportional to 156,964.73, 235,328.53 and 80,981.87

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Solution

The fourth proportional to 156,964.73, 235,328.53 and 80,981.87 is: 121,411.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,964.73 : 235,328.53 = 80,981.87 : x
  2. Step 2: Convert to fraction form
    156,964.73/235,328.53 = 80,981.87/x
  3. Step 3: Cross multiply
    156,964.73x = 235,328.53 × 80,981.87
  4. Step 4: Simplify right side
    156,964.73x = 19,057,342,842.20
  5. Step 5: Solve for x
    x = 19,057,342,842.20/156,964.73
  6. Step 6: Final answer
    x = 121,411.63

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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.