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Finding the Fourth Proportional to 121,000.93, 166,985.31 and 66,555.39

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Solution

The fourth proportional to 121,000.93, 166,985.31 and 66,555.39 is: 91,848.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,000.93 : 166,985.31 = 66,555.39 : x
  2. Step 2: Convert to fraction form
    121,000.93/166,985.31 = 66,555.39/x
  3. Step 3: Cross multiply
    121,000.93x = 166,985.31 × 66,555.39
  4. Step 4: Simplify right side
    121,000.93x = 11,113,772,431.32
  5. Step 5: Solve for x
    x = 11,113,772,431.32/121,000.93
  6. Step 6: Final answer
    x = 91,848.65

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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.