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Finding the Fourth Proportional to 121,054.59, 167,056.63 and 66,607.47

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Solution

The fourth proportional to 121,054.59, 167,056.63 and 66,607.47 is: 91,919.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,054.59 : 167,056.63 = 66,607.47 : x
  2. Step 2: Convert to fraction form
    121,054.59/167,056.63 = 66,607.47/x
  3. Step 3: Cross multiply
    121,054.59x = 167,056.63 × 66,607.47
  4. Step 4: Simplify right side
    121,054.59x = 11,127,219,304.51
  5. Step 5: Solve for x
    x = 11,127,219,304.51/121,054.59
  6. Step 6: Final answer
    x = 91,919.02

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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.