Home / 158,405.10-218,605.06-90,433.14

Finding the Fourth Proportional to 158,405.10, 218,605.06 and 90,433.14

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Solution

The fourth proportional to 158,405.10, 218,605.06 and 90,433.14 is: 124,801.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,405.10 : 218,605.06 = 90,433.14 : x
  2. Step 2: Convert to fraction form
    158,405.10/218,605.06 = 90,433.14/x
  3. Step 3: Cross multiply
    158,405.10x = 218,605.06 × 90,433.14
  4. Step 4: Simplify right side
    158,405.10x = 19,769,141,995.69
  5. Step 5: Solve for x
    x = 19,769,141,995.69/158,405.10
  6. Step 6: Final answer
    x = 124,801.17

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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.