Home / 151,678.20-209,357.55-88,036.50

Finding the Fourth Proportional to 151,678.20, 209,357.55 and 88,036.50

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Solution

The fourth proportional to 151,678.20, 209,357.55 and 88,036.50 is: 121,514.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,678.20 : 209,357.55 = 88,036.50 : x
  2. Step 2: Convert to fraction form
    151,678.20/209,357.55 = 88,036.50/x
  3. Step 3: Cross multiply
    151,678.20x = 209,357.55 × 88,036.50
  4. Step 4: Simplify right side
    151,678.20x = 18,431,105,950.58
  5. Step 5: Solve for x
    x = 18,431,105,950.58/151,678.20
  6. Step 6: Final answer
    x = 121,514.54

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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.