Home / 236,766.64-326,736-129,336.72

Finding the Fourth Proportional to 236,766.64, 326,736 and 129,336.72

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Solution

The fourth proportional to 236,766.64, 326,736 and 129,336.72 is: 178,483.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,766.64 : 326,736 = 129,336.72 : x
  2. Step 2: Convert to fraction form
    236,766.64/326,736 = 129,336.72/x
  3. Step 3: Cross multiply
    236,766.64x = 326,736 × 129,336.72
  4. Step 4: Simplify right side
    236,766.64x = 42,258,962,545.92
  5. Step 5: Solve for x
    x = 42,258,962,545.92/236,766.64
  6. Step 6: Final answer
    x = 178,483.60

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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.