Home / 135,155.45-186,506.98-74,722.57

Finding the Fourth Proportional to 135,155.45, 186,506.98 and 74,722.57

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Solution

The fourth proportional to 135,155.45, 186,506.98 and 74,722.57 is: 103,112.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,155.45 : 186,506.98 = 74,722.57 : x
  2. Step 2: Convert to fraction form
    135,155.45/186,506.98 = 74,722.57/x
  3. Step 3: Cross multiply
    135,155.45x = 186,506.98 × 74,722.57
  4. Step 4: Simplify right side
    135,155.45x = 13,936,280,868.54
  5. Step 5: Solve for x
    x = 13,936,280,868.54/135,155.45
  6. Step 6: Final answer
    x = 103,112.98

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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.