Home / 135,488.76-187,005.60-90,168.66

Finding the Fourth Proportional to 135,488.76, 187,005.60 and 90,168.66

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Solution

The fourth proportional to 135,488.76, 187,005.60 and 90,168.66 is: 124,453.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,488.76 : 187,005.60 = 90,168.66 : x
  2. Step 2: Convert to fraction form
    135,488.76/187,005.60 = 90,168.66/x
  3. Step 3: Cross multiply
    135,488.76x = 187,005.60 × 90,168.66
  4. Step 4: Simplify right side
    135,488.76x = 16,862,044,364.50
  5. Step 5: Solve for x
    x = 16,862,044,364.50/135,488.76
  6. Step 6: Final answer
    x = 124,453.46

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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.