Home / 155,947.02-215,209.37-87,965.34

Finding the Fourth Proportional to 155,947.02, 215,209.37 and 87,965.34

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Solution

The fourth proportional to 155,947.02, 215,209.37 and 87,965.34 is: 121,393.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,947.02 : 215,209.37 = 87,965.34 : x
  2. Step 2: Convert to fraction form
    155,947.02/215,209.37 = 87,965.34/x
  3. Step 3: Cross multiply
    155,947.02x = 215,209.37 × 87,965.34
  4. Step 4: Simplify right side
    155,947.02x = 18,930,964,963.41
  5. Step 5: Solve for x
    x = 18,930,964,963.41/155,947.02
  6. Step 6: Final answer
    x = 121,393.57

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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.