Home / 105,760.59-145,975.01-71,825.64

Finding the Fourth Proportional to 105,760.59, 145,975.01 and 71,825.64

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Solution

The fourth proportional to 105,760.59, 145,975.01 and 71,825.64 is: 99,136.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,760.59 : 145,975.01 = 71,825.64 : x
  2. Step 2: Convert to fraction form
    105,760.59/145,975.01 = 71,825.64/x
  3. Step 3: Cross multiply
    105,760.59x = 145,975.01 × 71,825.64
  4. Step 4: Simplify right side
    105,760.59x = 10,484,748,158.13
  5. Step 5: Solve for x
    x = 10,484,748,158.13/105,760.59
  6. Step 6: Final answer
    x = 99,136.63

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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.