Home / 158,131.44-218,220.89-86,510.84

Finding the Fourth Proportional to 158,131.44, 218,220.89 and 86,510.84

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Solution

The fourth proportional to 158,131.44, 218,220.89 and 86,510.84 is: 119,384.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,131.44 : 218,220.89 = 86,510.84 : x
  2. Step 2: Convert to fraction form
    158,131.44/218,220.89 = 86,510.84/x
  3. Step 3: Cross multiply
    158,131.44x = 218,220.89 × 86,510.84
  4. Step 4: Simplify right side
    158,131.44x = 18,878,470,975.79
  5. Step 5: Solve for x
    x = 18,878,470,975.79/158,131.44
  6. Step 6: Final answer
    x = 119,384.68

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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.