Home / 129,089,474.81-178,149,791.10-72,592,002.75

Finding the Fourth Proportional to 129,089,474.81, 178,149,791.10 and 72,592,002.75

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Solution

The fourth proportional to 129,089,474.81, 178,149,791.10 and 72,592,002.75 is: 100,180,515.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,089,474.81 : 178,149,791.10 = 72,592,002.75 : x
  2. Step 2: Convert to fraction form
    129,089,474.81/178,149,791.10 = 72,592,002.75/x
  3. Step 3: Cross multiply
    129,089,474.81x = 178,149,791.10 × 72,592,002.75
  4. Step 4: Simplify right side
    129,089,474.81x = 12,932,250,125,443,126
  5. Step 5: Solve for x
    x = 12,932,250,125,443,126/129,089,474.81
  6. Step 6: Final answer
    x = 100,180,515.45

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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.