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Finding the Fourth Proportional to 133,237.76, 183,865.86 and 72,807.01

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Solution

The fourth proportional to 133,237.76, 183,865.86 and 72,807.01 is: 100,472.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,237.76 : 183,865.86 = 72,807.01 : x
  2. Step 2: Convert to fraction form
    133,237.76/183,865.86 = 72,807.01/x
  3. Step 3: Cross multiply
    133,237.76x = 183,865.86 × 72,807.01
  4. Step 4: Simplify right side
    133,237.76x = 13,386,723,048.01
  5. Step 5: Solve for x
    x = 13,386,723,048.01/133,237.76
  6. Step 6: Final answer
    x = 100,472.45

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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.