Home / 128,514.80-192,642.60-58,444.40

Finding the Fourth Proportional to 128,514.80, 192,642.60 and 58,444.40

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Solution

The fourth proportional to 128,514.80, 192,642.60 and 58,444.40 is: 87,607.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,514.80 : 192,642.60 = 58,444.40 : x
  2. Step 2: Convert to fraction form
    128,514.80/192,642.60 = 58,444.40/x
  3. Step 3: Cross multiply
    128,514.80x = 192,642.60 × 58,444.40
  4. Step 4: Simplify right side
    128,514.80x = 11,258,881,171.44
  5. Step 5: Solve for x
    x = 11,258,881,171.44/128,514.80
  6. Step 6: Final answer
    x = 87,607.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.