Home / 103,579.60-142,934.34-61,122.64

Finding the Fourth Proportional to 103,579.60, 142,934.34 and 61,122.64

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Solution

The fourth proportional to 103,579.60, 142,934.34 and 61,122.64 is: 84,345.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,579.60 : 142,934.34 = 61,122.64 : x
  2. Step 2: Convert to fraction form
    103,579.60/142,934.34 = 61,122.64/x
  3. Step 3: Cross multiply
    103,579.60x = 142,934.34 × 61,122.64
  4. Step 4: Simplify right side
    103,579.60x = 8,736,524,207.46
  5. Step 5: Solve for x
    x = 8,736,524,207.46/103,579.60
  6. Step 6: Final answer
    x = 84,345.99

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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.