Home / 136,746.50-188,719.65-76,328.92

Finding the Fourth Proportional to 136,746.50, 188,719.65 and 76,328.92

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Solution

The fourth proportional to 136,746.50, 188,719.65 and 76,328.92 is: 105,339.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,746.50 : 188,719.65 = 76,328.92 : x
  2. Step 2: Convert to fraction form
    136,746.50/188,719.65 = 76,328.92/x
  3. Step 3: Cross multiply
    136,746.50x = 188,719.65 × 76,328.92
  4. Step 4: Simplify right side
    136,746.50x = 14,404,766,823.12
  5. Step 5: Solve for x
    x = 14,404,766,823.12/136,746.50
  6. Step 6: Final answer
    x = 105,339.20

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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.