Home / 103,109.60-142,359.80-79,193.52

Finding the Fourth Proportional to 103,109.60, 142,359.80 and 79,193.52

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Solution

The fourth proportional to 103,109.60, 142,359.80 and 79,193.52 is: 109,339.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,109.60 : 142,359.80 = 79,193.52 : x
  2. Step 2: Convert to fraction form
    103,109.60/142,359.80 = 79,193.52/x
  3. Step 3: Cross multiply
    103,109.60x = 142,359.80 × 79,193.52
  4. Step 4: Simplify right side
    103,109.60x = 11,273,973,668.50
  5. Step 5: Solve for x
    x = 11,273,973,668.50/103,109.60
  6. Step 6: Final answer
    x = 109,339.71

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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.