Home / 102,465.50-141,402.12-57,143.54

Finding the Fourth Proportional to 102,465.50, 141,402.12 and 57,143.54

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Solution

The fourth proportional to 102,465.50, 141,402.12 and 57,143.54 is: 78,857.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,465.50 : 141,402.12 = 57,143.54 : x
  2. Step 2: Convert to fraction form
    102,465.50/141,402.12 = 57,143.54/x
  3. Step 3: Cross multiply
    102,465.50x = 141,402.12 × 57,143.54
  4. Step 4: Simplify right side
    102,465.50x = 8,080,216,993.29
  5. Step 5: Solve for x
    x = 8,080,216,993.29/102,465.50
  6. Step 6: Final answer
    x = 78,857.93

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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.