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Finding the Fourth Proportional to 113,870.72, 157,129.66 and 66,114.74

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Solution

The fourth proportional to 113,870.72, 157,129.66 and 66,114.74 is: 91,231.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,870.72 : 157,129.66 = 66,114.74 : x
  2. Step 2: Convert to fraction form
    113,870.72/157,129.66 = 66,114.74/x
  3. Step 3: Cross multiply
    113,870.72x = 157,129.66 × 66,114.74
  4. Step 4: Simplify right side
    113,870.72x = 10,388,586,617.19
  5. Step 5: Solve for x
    x = 10,388,586,617.19/113,870.72
  6. Step 6: Final answer
    x = 91,231.41

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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.