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Finding the Fourth Proportional to 133,049, 183,607.62 and 90,681.55

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Solution

The fourth proportional to 133,049, 183,607.62 and 90,681.55 is: 125,140.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,049 : 183,607.62 = 90,681.55 : x
  2. Step 2: Convert to fraction form
    133,049/183,607.62 = 90,681.55/x
  3. Step 3: Cross multiply
    133,049x = 183,607.62 × 90,681.55
  4. Step 4: Simplify right side
    133,049x = 16,649,822,655.37
  5. Step 5: Solve for x
    x = 16,649,822,655.37/133,049
  6. Step 6: Final answer
    x = 125,140.53

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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.