Home / 112,938.60-169,602.30-79,890.60

Finding the Fourth Proportional to 112,938.60, 169,602.30 and 79,890.60

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Solution

The fourth proportional to 112,938.60, 169,602.30 and 79,890.60 is: 119,973.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,938.60 : 169,602.30 = 79,890.60 : x
  2. Step 2: Convert to fraction form
    112,938.60/169,602.30 = 79,890.60/x
  3. Step 3: Cross multiply
    112,938.60x = 169,602.30 × 79,890.60
  4. Step 4: Simplify right side
    112,938.60x = 13,549,629,508.38
  5. Step 5: Solve for x
    x = 13,549,629,508.38/112,938.60
  6. Step 6: Final answer
    x = 119,973.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.