Home / 158,117.40-218,195.10-86,498.82

Finding the Fourth Proportional to 158,117.40, 218,195.10 and 86,498.82

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Solution

The fourth proportional to 158,117.40, 218,195.10 and 86,498.82 is: 119,364.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,117.40 : 218,195.10 = 86,498.82 : x
  2. Step 2: Convert to fraction form
    158,117.40/218,195.10 = 86,498.82/x
  3. Step 3: Cross multiply
    158,117.40x = 218,195.10 × 86,498.82
  4. Step 4: Simplify right side
    158,117.40x = 18,873,618,679.78
  5. Step 5: Solve for x
    x = 18,873,618,679.78/158,117.40
  6. Step 6: Final answer
    x = 119,364.59

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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.