Home / 156,971.20-235,382.60-57,061.76

Finding the Fourth Proportional to 156,971.20, 235,382.60 and 57,061.76

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Solution

The fourth proportional to 156,971.20, 235,382.60 and 57,061.76 is: 85,565.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,971.20 : 235,382.60 = 57,061.76 : x
  2. Step 2: Convert to fraction form
    156,971.20/235,382.60 = 57,061.76/x
  3. Step 3: Cross multiply
    156,971.20x = 235,382.60 × 57,061.76
  4. Step 4: Simplify right side
    156,971.20x = 13,431,345,429.38
  5. Step 5: Solve for x
    x = 13,431,345,429.38/156,971.20
  6. Step 6: Final answer
    x = 85,565.67

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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.