Home / 132,381.10-182,656.95-78,683.98

Finding the Fourth Proportional to 132,381.10, 182,656.95 and 78,683.98

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Solution

The fourth proportional to 132,381.10, 182,656.95 and 78,683.98 is: 108,566.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,381.10 : 182,656.95 = 78,683.98 : x
  2. Step 2: Convert to fraction form
    132,381.10/182,656.95 = 78,683.98/x
  3. Step 3: Cross multiply
    132,381.10x = 182,656.95 × 78,683.98
  4. Step 4: Simplify right side
    132,381.10x = 14,372,175,800.66
  5. Step 5: Solve for x
    x = 14,372,175,800.66/132,381.10
  6. Step 6: Final answer
    x = 108,566.67

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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.