Home / 118,257.88-163,144.69-72,319.54

Finding the Fourth Proportional to 118,257.88, 163,144.69 and 72,319.54

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Solution

The fourth proportional to 118,257.88, 163,144.69 and 72,319.54 is: 99,769.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,257.88 : 163,144.69 = 72,319.54 : x
  2. Step 2: Convert to fraction form
    118,257.88/163,144.69 = 72,319.54/x
  3. Step 3: Cross multiply
    118,257.88x = 163,144.69 × 72,319.54
  4. Step 4: Simplify right side
    118,257.88x = 11,798,548,934.24
  5. Step 5: Solve for x
    x = 11,798,548,934.24/118,257.88
  6. Step 6: Final answer
    x = 99,769.66

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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.