Home / 158,144.60-218,230.26-86,510.36

Finding the Fourth Proportional to 158,144.60, 218,230.26 and 86,510.36

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Solution

The fourth proportional to 158,144.60, 218,230.26 and 86,510.36 is: 119,379.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,144.60 : 218,230.26 = 86,510.36 : x
  2. Step 2: Convert to fraction form
    158,144.60/218,230.26 = 86,510.36/x
  3. Step 3: Cross multiply
    158,144.60x = 218,230.26 × 86,510.36
  4. Step 4: Simplify right side
    158,144.60x = 18,879,178,355.49
  5. Step 5: Solve for x
    x = 18,879,178,355.49/158,144.60
  6. Step 6: Final answer
    x = 119,379.22

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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.