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Finding the Fourth Proportional to 135,376.79, 186,817.73 and 74,946.13

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Solution

The fourth proportional to 135,376.79, 186,817.73 and 74,946.13 is: 103,424.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,376.79 : 186,817.73 = 74,946.13 : x
  2. Step 2: Convert to fraction form
    135,376.79/186,817.73 = 74,946.13/x
  3. Step 3: Cross multiply
    135,376.79x = 186,817.73 × 74,946.13
  4. Step 4: Simplify right side
    135,376.79x = 14,001,265,037.11
  5. Step 5: Solve for x
    x = 14,001,265,037.11/135,376.79
  6. Step 6: Final answer
    x = 103,424.42

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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.