Home / 155,945.90-215,205.08-87,962.66

Finding the Fourth Proportional to 155,945.90, 215,205.08 and 87,962.66

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Solution

The fourth proportional to 155,945.90, 215,205.08 and 87,962.66 is: 121,388.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,945.90 : 215,205.08 = 87,962.66 : x
  2. Step 2: Convert to fraction form
    155,945.90/215,205.08 = 87,962.66/x
  3. Step 3: Cross multiply
    155,945.90x = 215,205.08 × 87,962.66
  4. Step 4: Simplify right side
    155,945.90x = 18,930,009,766.47
  5. Step 5: Solve for x
    x = 18,930,009,766.47/155,945.90
  6. Step 6: Final answer
    x = 121,388.32

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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.