Home / 102,981.64-142,098.24-57,661.52

Finding the Fourth Proportional to 102,981.64, 142,098.24 and 57,661.52

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Solution

The fourth proportional to 102,981.64, 142,098.24 and 57,661.52 is: 79,563.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,981.64 : 142,098.24 = 57,661.52 : x
  2. Step 2: Convert to fraction form
    102,981.64/142,098.24 = 57,661.52/x
  3. Step 3: Cross multiply
    102,981.64x = 142,098.24 × 57,661.52
  4. Step 4: Simplify right side
    102,981.64x = 8,193,600,507.72
  5. Step 5: Solve for x
    x = 8,193,600,507.72/102,981.64
  6. Step 6: Final answer
    x = 79,563.70

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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.