Home / 136,763.67-188,726.18-76,338.21

Finding the Fourth Proportional to 136,763.67, 188,726.18 and 76,338.21

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Solution

The fourth proportional to 136,763.67, 188,726.18 and 76,338.21 is: 105,342.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,763.67 : 188,726.18 = 76,338.21 : x
  2. Step 2: Convert to fraction form
    136,763.67/188,726.18 = 76,338.21/x
  3. Step 3: Cross multiply
    136,763.67x = 188,726.18 × 76,338.21
  4. Step 4: Simplify right side
    136,763.67x = 14,407,018,031.75
  5. Step 5: Solve for x
    x = 14,407,018,031.75/136,763.67
  6. Step 6: Final answer
    x = 105,342.44

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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.