Home / 131,701.45-181,748-71,272.09

Finding the Fourth Proportional to 131,701.45, 181,748 and 71,272.09

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Solution

The fourth proportional to 131,701.45, 181,748 and 71,272.09 is: 98,355.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,701.45 : 181,748 = 71,272.09 : x
  2. Step 2: Convert to fraction form
    131,701.45/181,748 = 71,272.09/x
  3. Step 3: Cross multiply
    131,701.45x = 181,748 × 71,272.09
  4. Step 4: Simplify right side
    131,701.45x = 12,953,559,813.32
  5. Step 5: Solve for x
    x = 12,953,559,813.32/131,701.45
  6. Step 6: Final answer
    x = 98,355.48

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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.