Home / 98,688.30-148,032.45-92,078.70

Finding the Fourth Proportional to 98,688.30, 148,032.45 and 92,078.70

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Solution

The fourth proportional to 98,688.30, 148,032.45 and 92,078.70 is: 138,118.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,688.30 : 148,032.45 = 92,078.70 : x
  2. Step 2: Convert to fraction form
    98,688.30/148,032.45 = 92,078.70/x
  3. Step 3: Cross multiply
    98,688.30x = 148,032.45 × 92,078.70
  4. Step 4: Simplify right side
    98,688.30x = 13,630,635,553.82
  5. Step 5: Solve for x
    x = 13,630,635,553.82/98,688.30
  6. Step 6: Final answer
    x = 138,118.05

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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.