Home / 151,302.80-208,735.20-90,036.72

Finding the Fourth Proportional to 151,302.80, 208,735.20 and 90,036.72

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Solution

The fourth proportional to 151,302.80, 208,735.20 and 90,036.72 is: 124,213.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,302.80 : 208,735.20 = 90,036.72 : x
  2. Step 2: Convert to fraction form
    151,302.80/208,735.20 = 90,036.72/x
  3. Step 3: Cross multiply
    151,302.80x = 208,735.20 × 90,036.72
  4. Step 4: Simplify right side
    151,302.80x = 18,793,832,418.91
  5. Step 5: Solve for x
    x = 18,793,832,418.91/151,302.80
  6. Step 6: Final answer
    x = 124,213.39

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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.