Home / 158,119.45-218,210.01-90,135.18

Finding the Fourth Proportional to 158,119.45, 218,210.01 and 90,135.18

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Solution

The fourth proportional to 158,119.45, 218,210.01 and 90,135.18 is: 124,389.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,119.45 : 218,210.01 = 90,135.18 : x
  2. Step 2: Convert to fraction form
    158,119.45/218,210.01 = 90,135.18/x
  3. Step 3: Cross multiply
    158,119.45x = 218,210.01 × 90,135.18
  4. Step 4: Simplify right side
    158,119.45x = 19,668,398,078.48
  5. Step 5: Solve for x
    x = 19,668,398,078.48/158,119.45
  6. Step 6: Final answer
    x = 124,389.50

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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.