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Finding the Fourth Proportional to 110,136.12, 151,987.88 and 65,424.12

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Solution

The fourth proportional to 110,136.12, 151,987.88 and 65,424.12 is: 90,285.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,136.12 : 151,987.88 = 65,424.12 : x
  2. Step 2: Convert to fraction form
    110,136.12/151,987.88 = 65,424.12/x
  3. Step 3: Cross multiply
    110,136.12x = 151,987.88 × 65,424.12
  4. Step 4: Simplify right side
    110,136.12x = 9,943,673,299.67
  5. Step 5: Solve for x
    x = 9,943,673,299.67/110,136.12
  6. Step 6: Final answer
    x = 90,285.31

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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.