Home / 135,702.34-187,277.70-78,352.15

Finding the Fourth Proportional to 135,702.34, 187,277.70 and 78,352.15

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Solution

The fourth proportional to 135,702.34, 187,277.70 and 78,352.15 is: 108,130.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,702.34 : 187,277.70 = 78,352.15 : x
  2. Step 2: Convert to fraction form
    135,702.34/187,277.70 = 78,352.15/x
  3. Step 3: Cross multiply
    135,702.34x = 187,277.70 × 78,352.15
  4. Step 4: Simplify right side
    135,702.34x = 14,673,609,505.67
  5. Step 5: Solve for x
    x = 14,673,609,505.67/135,702.34
  6. Step 6: Final answer
    x = 108,130.85

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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.