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Finding the Fourth Proportional to 135,312.76, 186,727.80 and 74,885.92

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Solution

The fourth proportional to 135,312.76, 186,727.80 and 74,885.92 is: 103,340.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,312.76 : 186,727.80 = 74,885.92 : x
  2. Step 2: Convert to fraction form
    135,312.76/186,727.80 = 74,885.92/x
  3. Step 3: Cross multiply
    135,312.76x = 186,727.80 × 74,885.92
  4. Step 4: Simplify right side
    135,312.76x = 13,983,283,092.58
  5. Step 5: Solve for x
    x = 13,983,283,092.58/135,312.76
  6. Step 6: Final answer
    x = 103,340.46

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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.