Home / 135,899.48-187,630-88,288.50

Finding the Fourth Proportional to 135,899.48, 187,630 and 88,288.50

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Solution

The fourth proportional to 135,899.48, 187,630 and 88,288.50 is: 121,895.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,899.48 : 187,630 = 88,288.50 : x
  2. Step 2: Convert to fraction form
    135,899.48/187,630 = 88,288.50/x
  3. Step 3: Cross multiply
    135,899.48x = 187,630 × 88,288.50
  4. Step 4: Simplify right side
    135,899.48x = 16,565,571,255
  5. Step 5: Solve for x
    x = 16,565,571,255/135,899.48
  6. Step 6: Final answer
    x = 121,895.77

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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.