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Finding the Fourth Proportional to 133,066.64, 183,630.32 and 72,637.68

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Solution

The fourth proportional to 133,066.64, 183,630.32 and 72,637.68 is: 100,239.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,066.64 : 183,630.32 = 72,637.68 : x
  2. Step 2: Convert to fraction form
    133,066.64/183,630.32 = 72,637.68/x
  3. Step 3: Cross multiply
    133,066.64x = 183,630.32 × 72,637.68
  4. Step 4: Simplify right side
    133,066.64x = 13,338,480,422.46
  5. Step 5: Solve for x
    x = 13,338,480,422.46/133,066.64
  6. Step 6: Final answer
    x = 100,239.10

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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.