Home / 122,278.47-168,740.78-74,514.39

Finding the Fourth Proportional to 122,278.47, 168,740.78 and 74,514.39

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Solution

The fourth proportional to 122,278.47, 168,740.78 and 74,514.39 is: 102,827.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,278.47 : 168,740.78 = 74,514.39 : x
  2. Step 2: Convert to fraction form
    122,278.47/168,740.78 = 74,514.39/x
  3. Step 3: Cross multiply
    122,278.47x = 168,740.78 × 74,514.39
  4. Step 4: Simplify right side
    122,278.47x = 12,573,616,289.82
  5. Step 5: Solve for x
    x = 12,573,616,289.82/122,278.47
  6. Step 6: Final answer
    x = 102,827.72

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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.