Home / 102,884.52-142,029.18-77,400.62

Finding the Fourth Proportional to 102,884.52, 142,029.18 and 77,400.62

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Solution

The fourth proportional to 102,884.52, 142,029.18 and 77,400.62 is: 106,849.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,884.52 : 142,029.18 = 77,400.62 : x
  2. Step 2: Convert to fraction form
    102,884.52/142,029.18 = 77,400.62/x
  3. Step 3: Cross multiply
    102,884.52x = 142,029.18 × 77,400.62
  4. Step 4: Simplify right side
    102,884.52x = 10,993,146,590.09
  5. Step 5: Solve for x
    x = 10,993,146,590.09/102,884.52
  6. Step 6: Final answer
    x = 106,849.37

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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.