Home / 155,883.52-215,106.24-87,917.20

Finding the Fourth Proportional to 155,883.52, 215,106.24 and 87,917.20

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Solution

The fourth proportional to 155,883.52, 215,106.24 and 87,917.20 is: 121,318.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,883.52 : 215,106.24 = 87,917.20 : x
  2. Step 2: Convert to fraction form
    155,883.52/215,106.24 = 87,917.20/x
  3. Step 3: Cross multiply
    155,883.52x = 215,106.24 × 87,917.20
  4. Step 4: Simplify right side
    155,883.52x = 18,911,538,323.33
  5. Step 5: Solve for x
    x = 18,911,538,323.33/155,883.52
  6. Step 6: Final answer
    x = 121,318.39

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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.