Home / 131,137.98-180,985.77-74,557.86

Finding the Fourth Proportional to 131,137.98, 180,985.77 and 74,557.86

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Solution

The fourth proportional to 131,137.98, 180,985.77 and 74,557.86 is: 102,898.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,137.98 : 180,985.77 = 74,557.86 : x
  2. Step 2: Convert to fraction form
    131,137.98/180,985.77 = 74,557.86/x
  3. Step 3: Cross multiply
    131,137.98x = 180,985.77 × 74,557.86
  4. Step 4: Simplify right side
    131,137.98x = 13,493,911,701.65
  5. Step 5: Solve for x
    x = 13,493,911,701.65/131,137.98
  6. Step 6: Final answer
    x = 102,898.58

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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.