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Finding the Fourth Proportional to 145,038.74, 200,179.04 and 91,340.60

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Solution

The fourth proportional to 145,038.74, 200,179.04 and 91,340.60 is: 126,066.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,038.74 : 200,179.04 = 91,340.60 : x
  2. Step 2: Convert to fraction form
    145,038.74/200,179.04 = 91,340.60/x
  3. Step 3: Cross multiply
    145,038.74x = 200,179.04 × 91,340.60
  4. Step 4: Simplify right side
    145,038.74x = 18,284,473,664.77
  5. Step 5: Solve for x
    x = 18,284,473,664.77/145,038.74
  6. Step 6: Final answer
    x = 126,066.13

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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.