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Finding the Fourth Proportional to 133,142.51, 183,737.91 and 75,779.02

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Solution

The fourth proportional to 133,142.51, 183,737.91 and 75,779.02 is: 104,575.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,142.51 : 183,737.91 = 75,779.02 : x
  2. Step 2: Convert to fraction form
    133,142.51/183,737.91 = 75,779.02/x
  3. Step 3: Cross multiply
    133,142.51x = 183,737.91 × 75,779.02
  4. Step 4: Simplify right side
    133,142.51x = 13,923,478,756.65
  5. Step 5: Solve for x
    x = 13,923,478,756.65/133,142.51
  6. Step 6: Final answer
    x = 104,575.76

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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.