Home / 138,646.61-191,332.32-74,984.41

Finding the Fourth Proportional to 138,646.61, 191,332.32 and 74,984.41

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Solution

The fourth proportional to 138,646.61, 191,332.32 and 74,984.41 is: 103,478.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,646.61 : 191,332.32 = 74,984.41 : x
  2. Step 2: Convert to fraction form
    138,646.61/191,332.32 = 74,984.41/x
  3. Step 3: Cross multiply
    138,646.61x = 191,332.32 × 74,984.41
  4. Step 4: Simplify right side
    138,646.61x = 14,346,940,514.45
  5. Step 5: Solve for x
    x = 14,346,940,514.45/138,646.61
  6. Step 6: Final answer
    x = 103,478.48

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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.