Home / 105,171.78-145,136.97-57,425.34

Finding the Fourth Proportional to 105,171.78, 145,136.97 and 57,425.34

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Solution

The fourth proportional to 105,171.78, 145,136.97 and 57,425.34 is: 79,246.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,171.78 : 145,136.97 = 57,425.34 : x
  2. Step 2: Convert to fraction form
    105,171.78/145,136.97 = 57,425.34/x
  3. Step 3: Cross multiply
    105,171.78x = 145,136.97 × 57,425.34
  4. Step 4: Simplify right side
    105,171.78x = 8,334,539,848.82
  5. Step 5: Solve for x
    x = 8,334,539,848.82/105,171.78
  6. Step 6: Final answer
    x = 79,246.92

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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.