Home / 156,975.57-235,463.58-72,689.81

Finding the Fourth Proportional to 156,975.57, 235,463.58 and 72,689.81

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Solution

The fourth proportional to 156,975.57, 235,463.58 and 72,689.81 is: 109,034.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,975.57 : 235,463.58 = 72,689.81 : x
  2. Step 2: Convert to fraction form
    156,975.57/235,463.58 = 72,689.81/x
  3. Step 3: Cross multiply
    156,975.57x = 235,463.58 × 72,689.81
  4. Step 4: Simplify right side
    156,975.57x = 17,115,801,714.80
  5. Step 5: Solve for x
    x = 17,115,801,714.80/156,975.57
  6. Step 6: Final answer
    x = 109,034.81

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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.