Home / 138,929.88-208,370.64-39,066.36

Finding the Fourth Proportional to 138,929.88, 208,370.64 and 39,066.36

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Solution

The fourth proportional to 138,929.88, 208,370.64 and 39,066.36 is: 58,592.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,929.88 : 208,370.64 = 39,066.36 : x
  2. Step 2: Convert to fraction form
    138,929.88/208,370.64 = 39,066.36/x
  3. Step 3: Cross multiply
    138,929.88x = 208,370.64 × 39,066.36
  4. Step 4: Simplify right side
    138,929.88x = 8,140,282,435.67
  5. Step 5: Solve for x
    x = 8,140,282,435.67/138,929.88
  6. Step 6: Final answer
    x = 58,592.74

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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.