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Finding the Fourth Proportional to 93,419.51, 140,184.60 and 87,508.79

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Solution

The fourth proportional to 93,419.51, 140,184.60 and 87,508.79 is: 131,315.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,419.51 : 140,184.60 = 87,508.79 : x
  2. Step 2: Convert to fraction form
    93,419.51/140,184.60 = 87,508.79/x
  3. Step 3: Cross multiply
    93,419.51x = 140,184.60 × 87,508.79
  4. Step 4: Simplify right side
    93,419.51x = 12,267,384,722.63
  5. Step 5: Solve for x
    x = 12,267,384,722.63/93,419.51
  6. Step 6: Final answer
    x = 131,315.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.