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Finding the Fourth Proportional to 117,031.77, 161,505 and 63,317.94

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Solution

The fourth proportional to 117,031.77, 161,505 and 63,317.94 is: 87,379.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,031.77 : 161,505 = 63,317.94 : x
  2. Step 2: Convert to fraction form
    117,031.77/161,505 = 63,317.94/x
  3. Step 3: Cross multiply
    117,031.77x = 161,505 × 63,317.94
  4. Step 4: Simplify right side
    117,031.77x = 10,226,163,899.70
  5. Step 5: Solve for x
    x = 10,226,163,899.70/117,031.77
  6. Step 6: Final answer
    x = 87,379.38

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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.