Home / 138,401.10-191,007.60-84,721.59

Finding the Fourth Proportional to 138,401.10, 191,007.60 and 84,721.59

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Solution

The fourth proportional to 138,401.10, 191,007.60 and 84,721.59 is: 116,924.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,401.10 : 191,007.60 = 84,721.59 : x
  2. Step 2: Convert to fraction form
    138,401.10/191,007.60 = 84,721.59/x
  3. Step 3: Cross multiply
    138,401.10x = 191,007.60 × 84,721.59
  4. Step 4: Simplify right side
    138,401.10x = 16,182,467,574.08
  5. Step 5: Solve for x
    x = 16,182,467,574.08/138,401.10
  6. Step 6: Final answer
    x = 116,924.41

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1.5x scale

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.