Home / 135,436.50-186,840.34-87,705.24

Finding the Fourth Proportional to 135,436.50, 186,840.34 and 87,705.24

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Solution

The fourth proportional to 135,436.50, 186,840.34 and 87,705.24 is: 120,993.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,436.50 : 186,840.34 = 87,705.24 : x
  2. Step 2: Convert to fraction form
    135,436.50/186,840.34 = 87,705.24/x
  3. Step 3: Cross multiply
    135,436.50x = 186,840.34 × 87,705.24
  4. Step 4: Simplify right side
    135,436.50x = 16,386,876,861.38
  5. Step 5: Solve for x
    x = 16,386,876,861.38/135,436.50
  6. Step 6: Final answer
    x = 120,993.06

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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.