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Finding the Fourth Proportional to 136,186.46, 187,885.60 and 84,479.58

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Solution

The fourth proportional to 136,186.46, 187,885.60 and 84,479.58 is: 116,549.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,186.46 : 187,885.60 = 84,479.58 : x
  2. Step 2: Convert to fraction form
    136,186.46/187,885.60 = 84,479.58/x
  3. Step 3: Cross multiply
    136,186.46x = 187,885.60 × 84,479.58
  4. Step 4: Simplify right side
    136,186.46x = 15,872,496,576.05
  5. Step 5: Solve for x
    x = 15,872,496,576.05/136,186.46
  6. Step 6: Final answer
    x = 116,549.74

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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.