Home / 158,554.18-218,803.09-86,934.03

Finding the Fourth Proportional to 158,554.18, 218,803.09 and 86,934.03

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Solution

The fourth proportional to 158,554.18, 218,803.09 and 86,934.03 is: 119,968.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,554.18 : 218,803.09 = 86,934.03 : x
  2. Step 2: Convert to fraction form
    158,554.18/218,803.09 = 86,934.03/x
  3. Step 3: Cross multiply
    158,554.18x = 218,803.09 × 86,934.03
  4. Step 4: Simplify right side
    158,554.18x = 19,021,434,390.15
  5. Step 5: Solve for x
    x = 19,021,434,390.15/158,554.18
  6. Step 6: Final answer
    x = 119,968.04

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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.