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Finding the Fourth Proportional to 117,221.01, 161,764.80 and 63,506.25

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Solution

The fourth proportional to 117,221.01, 161,764.80 and 63,506.25 is: 87,638.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,221.01 : 161,764.80 = 63,506.25 : x
  2. Step 2: Convert to fraction form
    117,221.01/161,764.80 = 63,506.25/x
  3. Step 3: Cross multiply
    117,221.01x = 161,764.80 × 63,506.25
  4. Step 4: Simplify right side
    117,221.01x = 10,273,075,830
  5. Step 5: Solve for x
    x = 10,273,075,830/117,221.01
  6. Step 6: Final answer
    x = 87,638.52

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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.