Home / 136,711.19-188,661.10-76,281.19

Finding the Fourth Proportional to 136,711.19, 188,661.10 and 76,281.19

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Solution

The fourth proportional to 136,711.19, 188,661.10 and 76,281.19 is: 105,267.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,711.19 : 188,661.10 = 76,281.19 : x
  2. Step 2: Convert to fraction form
    136,711.19/188,661.10 = 76,281.19/x
  3. Step 3: Cross multiply
    136,711.19x = 188,661.10 × 76,281.19
  4. Step 4: Simplify right side
    136,711.19x = 14,391,293,756.60
  5. Step 5: Solve for x
    x = 14,391,293,756.60/136,711.19
  6. Step 6: Final answer
    x = 105,267.85

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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.