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Finding the Fourth Proportional to 120,237.60, 180,010.80 and 73,581.60

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Solution

The fourth proportional to 120,237.60, 180,010.80 and 73,581.60 is: 110,160.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,237.60 : 180,010.80 = 73,581.60 : x
  2. Step 2: Convert to fraction form
    120,237.60/180,010.80 = 73,581.60/x
  3. Step 3: Cross multiply
    120,237.60x = 180,010.80 × 73,581.60
  4. Step 4: Simplify right side
    120,237.60x = 13,245,482,681.28
  5. Step 5: Solve for x
    x = 13,245,482,681.28/120,237.60
  6. Step 6: Final answer
    x = 110,160.90

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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.