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Finding the Fourth Proportional to 134,880.66, 186,135.32 and 74,451.32

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Solution

The fourth proportional to 134,880.66, 186,135.32 and 74,451.32 is: 102,742.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,880.66 : 186,135.32 = 74,451.32 : x
  2. Step 2: Convert to fraction form
    134,880.66/186,135.32 = 74,451.32/x
  3. Step 3: Cross multiply
    134,880.66x = 186,135.32 × 74,451.32
  4. Step 4: Simplify right side
    134,880.66x = 13,858,019,807.28
  5. Step 5: Solve for x
    x = 13,858,019,807.28/134,880.66
  6. Step 6: Final answer
    x = 102,742.82

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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.