Home / 105,099.88-145,037.82-67,374.14

Finding the Fourth Proportional to 105,099.88, 145,037.82 and 67,374.14

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Solution

The fourth proportional to 105,099.88, 145,037.82 and 67,374.14 is: 92,976.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,099.88 : 145,037.82 = 67,374.14 : x
  2. Step 2: Convert to fraction form
    105,099.88/145,037.82 = 67,374.14/x
  3. Step 3: Cross multiply
    105,099.88x = 145,037.82 × 67,374.14
  4. Step 4: Simplify right side
    105,099.88x = 9,771,798,389.97
  5. Step 5: Solve for x
    x = 9,771,798,389.97/105,099.88
  6. Step 6: Final answer
    x = 92,976.30

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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.