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Finding the Fourth Proportional to 123,346.53, 170,217 and 69,630.39

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Solution

The fourth proportional to 123,346.53, 170,217 and 69,630.39 is: 96,089.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,346.53 : 170,217 = 69,630.39 : x
  2. Step 2: Convert to fraction form
    123,346.53/170,217 = 69,630.39/x
  3. Step 3: Cross multiply
    123,346.53x = 170,217 × 69,630.39
  4. Step 4: Simplify right side
    123,346.53x = 11,852,276,094.63
  5. Step 5: Solve for x
    x = 11,852,276,094.63/123,346.53
  6. Step 6: Final answer
    x = 96,089.25

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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.