Home / 131,089.98-180,919.53-74,509.86

Finding the Fourth Proportional to 131,089.98, 180,919.53 and 74,509.86

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Solution

The fourth proportional to 131,089.98, 180,919.53 and 74,509.86 is: 102,832.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,089.98 : 180,919.53 = 74,509.86 : x
  2. Step 2: Convert to fraction form
    131,089.98/180,919.53 = 74,509.86/x
  3. Step 3: Cross multiply
    131,089.98x = 180,919.53 × 74,509.86
  4. Step 4: Simplify right side
    131,089.98x = 13,480,288,851.57
  5. Step 5: Solve for x
    x = 13,480,288,851.57/131,089.98
  6. Step 6: Final answer
    x = 102,832.34

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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.