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Finding the Fourth Proportional to 113,955, 157,219.38 and 66,169.04

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Solution

The fourth proportional to 113,955, 157,219.38 and 66,169.04 is: 91,290.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,955 : 157,219.38 = 66,169.04 : x
  2. Step 2: Convert to fraction form
    113,955/157,219.38 = 66,169.04/x
  3. Step 3: Cross multiply
    113,955x = 157,219.38 × 66,169.04
  4. Step 4: Simplify right side
    113,955x = 10,403,055,444.00
  5. Step 5: Solve for x
    x = 10,403,055,444.00/113,955
  6. Step 6: Final answer
    x = 91,290.91

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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.