Home / 105,175.52-145,136.56-61,581.36

Finding the Fourth Proportional to 105,175.52, 145,136.56 and 61,581.36

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Solution

The fourth proportional to 105,175.52, 145,136.56 and 61,581.36 is: 84,978.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,175.52 : 145,136.56 = 61,581.36 : x
  2. Step 2: Convert to fraction form
    105,175.52/145,136.56 = 61,581.36/x
  3. Step 3: Cross multiply
    105,175.52x = 145,136.56 × 61,581.36
  4. Step 4: Simplify right side
    105,175.52x = 8,937,706,750.52
  5. Step 5: Solve for x
    x = 8,937,706,750.52/105,175.52
  6. Step 6: Final answer
    x = 84,978.96

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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.