Home / 268,135.24-402,204.08-90,643.20

Finding the Fourth Proportional to 268,135.24, 402,204.08 and 90,643.20

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Solution

The fourth proportional to 268,135.24, 402,204.08 and 90,643.20 is: 135,965.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,135.24 : 402,204.08 = 90,643.20 : x
  2. Step 2: Convert to fraction form
    268,135.24/402,204.08 = 90,643.20/x
  3. Step 3: Cross multiply
    268,135.24x = 402,204.08 × 90,643.20
  4. Step 4: Simplify right side
    268,135.24x = 36,457,064,864.26
  5. Step 5: Solve for x
    x = 36,457,064,864.26/268,135.24
  6. Step 6: Final answer
    x = 135,965.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.