Home / 157,541.04-217,405.68-85,920.72

Finding the Fourth Proportional to 157,541.04, 217,405.68 and 85,920.72

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Solution

The fourth proportional to 157,541.04, 217,405.68 and 85,920.72 is: 118,570.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,541.04 : 217,405.68 = 85,920.72 : x
  2. Step 2: Convert to fraction form
    157,541.04/217,405.68 = 85,920.72/x
  3. Step 3: Cross multiply
    157,541.04x = 217,405.68 × 85,920.72
  4. Step 4: Simplify right side
    157,541.04x = 18,679,652,557.69
  5. Step 5: Solve for x
    x = 18,679,652,557.69/157,541.04
  6. Step 6: Final answer
    x = 118,570.07

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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.