Home / 105,445.04-145,514.15-57,698.39

Finding the Fourth Proportional to 105,445.04, 145,514.15 and 57,698.39

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Solution

The fourth proportional to 105,445.04, 145,514.15 and 57,698.39 is: 79,623.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,445.04 : 145,514.15 = 57,698.39 : x
  2. Step 2: Convert to fraction form
    105,445.04/145,514.15 = 57,698.39/x
  3. Step 3: Cross multiply
    105,445.04x = 145,514.15 × 57,698.39
  4. Step 4: Simplify right side
    105,445.04x = 8,395,932,177.22
  5. Step 5: Solve for x
    x = 8,395,932,177.22/105,445.04
  6. Step 6: Final answer
    x = 79,623.78

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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.