Home / 158,139.24-218,230.23-90,154.05

Finding the Fourth Proportional to 158,139.24, 218,230.23 and 90,154.05

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Solution

The fourth proportional to 158,139.24, 218,230.23 and 90,154.05 is: 124,411.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,139.24 : 218,230.23 = 90,154.05 : x
  2. Step 2: Convert to fraction form
    158,139.24/218,230.23 = 90,154.05/x
  3. Step 3: Cross multiply
    158,139.24x = 218,230.23 × 90,154.05
  4. Step 4: Simplify right side
    158,139.24x = 19,674,339,066.93
  5. Step 5: Solve for x
    x = 19,674,339,066.93/158,139.24
  6. Step 6: Final answer
    x = 124,411.49

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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.