Home / 158,451.23-218,662.85-86,831.42

Finding the Fourth Proportional to 158,451.23, 218,662.85 and 86,831.42

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Solution

The fourth proportional to 158,451.23, 218,662.85 and 86,831.42 is: 119,827.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,451.23 : 218,662.85 = 86,831.42 : x
  2. Step 2: Convert to fraction form
    158,451.23/218,662.85 = 86,831.42/x
  3. Step 3: Cross multiply
    158,451.23x = 218,662.85 × 86,831.42
  4. Step 4: Simplify right side
    158,451.23x = 18,986,804,890.51
  5. Step 5: Solve for x
    x = 18,986,804,890.51/158,451.23
  6. Step 6: Final answer
    x = 119,827.44

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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.