Home / 158,502.09-218,605.34-139,340.89

Finding the Fourth Proportional to 158,502.09, 218,605.34 and 139,340.89

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Solution

The fourth proportional to 158,502.09, 218,605.34 and 139,340.89 is: 192,178.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,502.09 : 218,605.34 = 139,340.89 : x
  2. Step 2: Convert to fraction form
    158,502.09/218,605.34 = 139,340.89/x
  3. Step 3: Cross multiply
    158,502.09x = 218,605.34 × 139,340.89
  4. Step 4: Simplify right side
    158,502.09x = 30,460,661,937.65
  5. Step 5: Solve for x
    x = 30,460,661,937.65/158,502.09
  6. Step 6: Final answer
    x = 192,178.30

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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.