Home / 102,478.05-141,420.51-57,158.91

Finding the Fourth Proportional to 102,478.05, 141,420.51 and 57,158.91

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Solution

The fourth proportional to 102,478.05, 141,420.51 and 57,158.91 is: 78,879.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,478.05 : 141,420.51 = 57,158.91 : x
  2. Step 2: Convert to fraction form
    102,478.05/141,420.51 = 57,158.91/x
  3. Step 3: Cross multiply
    102,478.05x = 141,420.51 × 57,158.91
  4. Step 4: Simplify right side
    102,478.05x = 8,083,442,203.24
  5. Step 5: Solve for x
    x = 8,083,442,203.24/102,478.05
  6. Step 6: Final answer
    x = 78,879.74

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1.5x scale

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.