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Finding the Fourth Proportional to 135,165.84, 186,512.58 and 74,728.32

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Solution

The fourth proportional to 135,165.84, 186,512.58 and 74,728.32 is: 103,116.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,165.84 : 186,512.58 = 74,728.32 : x
  2. Step 2: Convert to fraction form
    135,165.84/186,512.58 = 74,728.32/x
  3. Step 3: Cross multiply
    135,165.84x = 186,512.58 × 74,728.32
  4. Step 4: Simplify right side
    135,165.84x = 13,937,771,762.27
  5. Step 5: Solve for x
    x = 13,937,771,762.27/135,165.84
  6. Step 6: Final answer
    x = 103,116.08

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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.