Home / 135,599.64-187,088.82-78,234.42

Finding the Fourth Proportional to 135,599.64, 187,088.82 and 78,234.42

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Solution

The fourth proportional to 135,599.64, 187,088.82 and 78,234.42 is: 107,941.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,599.64 : 187,088.82 = 78,234.42 : x
  2. Step 2: Convert to fraction form
    135,599.64/187,088.82 = 78,234.42/x
  3. Step 3: Cross multiply
    135,599.64x = 187,088.82 × 78,234.42
  4. Step 4: Simplify right side
    135,599.64x = 14,636,785,321.18
  5. Step 5: Solve for x
    x = 14,636,785,321.18/135,599.64
  6. Step 6: Final answer
    x = 107,941.18

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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.