Home / 105,143.90-157,655.25-71,904.24

Finding the Fourth Proportional to 105,143.90, 157,655.25 and 71,904.24

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Solution

The fourth proportional to 105,143.90, 157,655.25 and 71,904.24 is: 107,814.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,143.90 : 157,655.25 = 71,904.24 : x
  2. Step 2: Convert to fraction form
    105,143.90/157,655.25 = 71,904.24/x
  3. Step 3: Cross multiply
    105,143.90x = 157,655.25 × 71,904.24
  4. Step 4: Simplify right side
    105,143.90x = 11,336,080,933.26
  5. Step 5: Solve for x
    x = 11,336,080,933.26/105,143.90
  6. Step 6: Final answer
    x = 107,814.92

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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.