Home / 87,643.26-120,693.38-76,153.01

Finding the Fourth Proportional to 87,643.26, 120,693.38 and 76,153.01

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Solution

The fourth proportional to 87,643.26, 120,693.38 and 76,153.01 is: 104,870.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,643.26 : 120,693.38 = 76,153.01 : x
  2. Step 2: Convert to fraction form
    87,643.26/120,693.38 = 76,153.01/x
  3. Step 3: Cross multiply
    87,643.26x = 120,693.38 × 76,153.01
  4. Step 4: Simplify right side
    87,643.26x = 9,191,163,189.84
  5. Step 5: Solve for x
    x = 9,191,163,189.84/87,643.26
  6. Step 6: Final answer
    x = 104,870.17

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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.