Home / 138,429.48-191,032.62-74,767.32

Finding the Fourth Proportional to 138,429.48, 191,032.62 and 74,767.32

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Solution

The fourth proportional to 138,429.48, 191,032.62 and 74,767.32 is: 103,178.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,429.48 : 191,032.62 = 74,767.32 : x
  2. Step 2: Convert to fraction form
    138,429.48/191,032.62 = 74,767.32/x
  3. Step 3: Cross multiply
    138,429.48x = 191,032.62 × 74,767.32
  4. Step 4: Simplify right side
    138,429.48x = 14,282,997,029.98
  5. Step 5: Solve for x
    x = 14,282,997,029.98/138,429.48
  6. Step 6: Final answer
    x = 103,178.87

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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.