Home / 236,612.80-326,520.48-129,178.72

Finding the Fourth Proportional to 236,612.80, 326,520.48 and 129,178.72

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Solution

The fourth proportional to 236,612.80, 326,520.48 and 129,178.72 is: 178,263.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,612.80 : 326,520.48 = 129,178.72 : x
  2. Step 2: Convert to fraction form
    236,612.80/326,520.48 = 129,178.72/x
  3. Step 3: Cross multiply
    236,612.80x = 326,520.48 × 129,178.72
  4. Step 4: Simplify right side
    236,612.80x = 42,179,497,660.19
  5. Step 5: Solve for x
    x = 42,179,497,660.19/236,612.80
  6. Step 6: Final answer
    x = 178,263.80

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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.