Home / 158,289-218,444.43-86,669.61

Finding the Fourth Proportional to 158,289, 218,444.43 and 86,669.61

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Solution

The fourth proportional to 158,289, 218,444.43 and 86,669.61 is: 119,607.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,289 : 218,444.43 = 86,669.61 : x
  2. Step 2: Convert to fraction form
    158,289/218,444.43 = 86,669.61/x
  3. Step 3: Cross multiply
    158,289x = 218,444.43 × 86,669.61
  4. Step 4: Simplify right side
    158,289x = 18,932,493,554.77
  5. Step 5: Solve for x
    x = 18,932,493,554.77/158,289
  6. Step 6: Final answer
    x = 119,607.13

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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.