Home / 158,023.16-218,131.26-103,578.84

Finding the Fourth Proportional to 158,023.16, 218,131.26 and 103,578.84

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Solution

The fourth proportional to 158,023.16, 218,131.26 and 103,578.84 is: 142,977.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,023.16 : 218,131.26 = 103,578.84 : x
  2. Step 2: Convert to fraction form
    158,023.16/218,131.26 = 103,578.84/x
  3. Step 3: Cross multiply
    158,023.16x = 218,131.26 × 103,578.84
  4. Step 4: Simplify right side
    158,023.16x = 22,593,782,254.76
  5. Step 5: Solve for x
    x = 22,593,782,254.76/158,023.16
  6. Step 6: Final answer
    x = 142,977.66

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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.