Home / 136,689.08-188,630.65-76,256.12

Finding the Fourth Proportional to 136,689.08, 188,630.65 and 76,256.12

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Solution

The fourth proportional to 136,689.08, 188,630.65 and 76,256.12 is: 105,233.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,689.08 : 188,630.65 = 76,256.12 : x
  2. Step 2: Convert to fraction form
    136,689.08/188,630.65 = 76,256.12/x
  3. Step 3: Cross multiply
    136,689.08x = 188,630.65 × 76,256.12
  4. Step 4: Simplify right side
    136,689.08x = 14,384,241,482.08
  5. Step 5: Solve for x
    x = 14,384,241,482.08/136,689.08
  6. Step 6: Final answer
    x = 105,233.29

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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.