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Finding the Fourth Proportional to 135,394.83, 186,848.46 and 74,970.77

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Solution

The fourth proportional to 135,394.83, 186,848.46 and 74,970.77 is: 103,461.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,394.83 : 186,848.46 = 74,970.77 : x
  2. Step 2: Convert to fraction form
    135,394.83/186,848.46 = 74,970.77/x
  3. Step 3: Cross multiply
    135,394.83x = 186,848.46 × 74,970.77
  4. Step 4: Simplify right side
    135,394.83x = 14,008,172,919.51
  5. Step 5: Solve for x
    x = 14,008,172,919.51/135,394.83
  6. Step 6: Final answer
    x = 103,461.65

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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.