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Finding the Fourth Proportional to 148,641.60, 205,189.40 and 91,290.22

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Solution

The fourth proportional to 148,641.60, 205,189.40 and 91,290.22 is: 126,019.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,641.60 : 205,189.40 = 91,290.22 : x
  2. Step 2: Convert to fraction form
    148,641.60/205,189.40 = 91,290.22/x
  3. Step 3: Cross multiply
    148,641.60x = 205,189.40 × 91,290.22
  4. Step 4: Simplify right side
    148,641.60x = 18,731,785,467.67
  5. Step 5: Solve for x
    x = 18,731,785,467.67/148,641.60
  6. Step 6: Final answer
    x = 126,019.81

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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.