Home / 158,254.19-218,395.94-86,634.21

Finding the Fourth Proportional to 158,254.19, 218,395.94 and 86,634.21

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Solution

The fourth proportional to 158,254.19, 218,395.94 and 86,634.21 is: 119,558.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,254.19 : 218,395.94 = 86,634.21 : x
  2. Step 2: Convert to fraction form
    158,254.19/218,395.94 = 86,634.21/x
  3. Step 3: Cross multiply
    158,254.19x = 218,395.94 × 86,634.21
  4. Step 4: Simplify right side
    158,254.19x = 18,920,559,729.11
  5. Step 5: Solve for x
    x = 18,920,559,729.11/158,254.19
  6. Step 6: Final answer
    x = 119,558.03

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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.