Home / 151,454.86-209,008.56-87,830.44

Finding the Fourth Proportional to 151,454.86, 209,008.56 and 87,830.44

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Solution

The fourth proportional to 151,454.86, 209,008.56 and 87,830.44 is: 121,206.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,454.86 : 209,008.56 = 87,830.44 : x
  2. Step 2: Convert to fraction form
    151,454.86/209,008.56 = 87,830.44/x
  3. Step 3: Cross multiply
    151,454.86x = 209,008.56 × 87,830.44
  4. Step 4: Simplify right side
    151,454.86x = 18,357,313,788.57
  5. Step 5: Solve for x
    x = 18,357,313,788.57/151,454.86
  6. Step 6: Final answer
    x = 121,206.50

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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.