Home / 117,131.79-161,641.64-63,416.85

Finding the Fourth Proportional to 117,131.79, 161,641.64 and 63,416.85

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Solution

The fourth proportional to 117,131.79, 161,641.64 and 63,416.85 is: 87,515.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,131.79 : 161,641.64 = 63,416.85 : x
  2. Step 2: Convert to fraction form
    117,131.79/161,641.64 = 63,416.85/x
  3. Step 3: Cross multiply
    117,131.79x = 161,641.64 × 63,416.85
  4. Step 4: Simplify right side
    117,131.79x = 10,250,803,320.55
  5. Step 5: Solve for x
    x = 10,250,803,320.55/117,131.79
  6. Step 6: Final answer
    x = 87,515.13

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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.