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Finding the Fourth Proportional to 112,135.59, 154,748.31 and 61,147.89

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Solution

The fourth proportional to 112,135.59, 154,748.31 and 61,147.89 is: 84,384.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,135.59 : 154,748.31 = 61,147.89 : x
  2. Step 2: Convert to fraction form
    112,135.59/154,748.31 = 61,147.89/x
  3. Step 3: Cross multiply
    112,135.59x = 154,748.31 × 61,147.89
  4. Step 4: Simplify right side
    112,135.59x = 9,462,532,637.57
  5. Step 5: Solve for x
    x = 9,462,532,637.57/112,135.59
  6. Step 6: Final answer
    x = 84,384.74

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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.