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Finding the Fourth Proportional to 145,099.06, 200,326.72 and 99,760.12

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Solution

The fourth proportional to 145,099.06, 200,326.72 and 99,760.12 is: 137,730.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,099.06 : 200,326.72 = 99,760.12 : x
  2. Step 2: Convert to fraction form
    145,099.06/200,326.72 = 99,760.12/x
  3. Step 3: Cross multiply
    145,099.06x = 200,326.72 × 99,760.12
  4. Step 4: Simplify right side
    145,099.06x = 19,984,617,626.41
  5. Step 5: Solve for x
    x = 19,984,617,626.41/145,099.06
  6. Step 6: Final answer
    x = 137,730.86

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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.