Home / 131,071.72-180,876.79-72,926.21

Finding the Fourth Proportional to 131,071.72, 180,876.79 and 72,926.21

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Solution

The fourth proportional to 131,071.72, 180,876.79 and 72,926.21 is: 100,636.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,071.72 : 180,876.79 = 72,926.21 : x
  2. Step 2: Convert to fraction form
    131,071.72/180,876.79 = 72,926.21/x
  3. Step 3: Cross multiply
    131,071.72x = 180,876.79 × 72,926.21
  4. Step 4: Simplify right side
    131,071.72x = 13,190,658,771.67
  5. Step 5: Solve for x
    x = 13,190,658,771.67/131,071.72
  6. Step 6: Final answer
    x = 100,636.95

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1.5x scale

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.