Home / 131,156.28-180,981-73,784.52

Finding the Fourth Proportional to 131,156.28, 180,981 and 73,784.52

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Solution

The fourth proportional to 131,156.28, 180,981 and 73,784.52 is: 101,814.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,156.28 : 180,981 = 73,784.52 : x
  2. Step 2: Convert to fraction form
    131,156.28/180,981 = 73,784.52/x
  3. Step 3: Cross multiply
    131,156.28x = 180,981 × 73,784.52
  4. Step 4: Simplify right side
    131,156.28x = 13,353,596,214.12
  5. Step 5: Solve for x
    x = 13,353,596,214.12/131,156.28
  6. Step 6: Final answer
    x = 101,814.39

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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.