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Finding the Fourth Proportional to 133,368.81, 183,753.59 and 87,966.69

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Solution

The fourth proportional to 133,368.81, 183,753.59 and 87,966.69 is: 121,199.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,368.81 : 183,753.59 = 87,966.69 : x
  2. Step 2: Convert to fraction form
    133,368.81/183,753.59 = 87,966.69/x
  3. Step 3: Cross multiply
    133,368.81x = 183,753.59 × 87,966.69
  4. Step 4: Simplify right side
    133,368.81x = 16,164,194,648.08
  5. Step 5: Solve for x
    x = 16,164,194,648.08/133,368.81
  6. Step 6: Final answer
    x = 121,199.21

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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.