Home / 102,942.40-142,053.91-57,612.73

Finding the Fourth Proportional to 102,942.40, 142,053.91 and 57,612.73

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Solution

The fourth proportional to 102,942.40, 142,053.91 and 57,612.73 is: 79,501.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,942.40 : 142,053.91 = 57,612.73 : x
  2. Step 2: Convert to fraction form
    102,942.40/142,053.91 = 57,612.73/x
  3. Step 3: Cross multiply
    102,942.40x = 142,053.91 × 57,612.73
  4. Step 4: Simplify right side
    102,942.40x = 8,184,113,562.27
  5. Step 5: Solve for x
    x = 8,184,113,562.27/102,942.40
  6. Step 6: Final answer
    x = 79,501.87

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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.