Home / 138,721.66-191,434.52-75,058.06

Finding the Fourth Proportional to 138,721.66, 191,434.52 and 75,058.06

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Solution

The fourth proportional to 138,721.66, 191,434.52 and 75,058.06 is: 103,579.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,721.66 : 191,434.52 = 75,058.06 : x
  2. Step 2: Convert to fraction form
    138,721.66/191,434.52 = 75,058.06/x
  3. Step 3: Cross multiply
    138,721.66x = 191,434.52 × 75,058.06
  4. Step 4: Simplify right side
    138,721.66x = 14,368,703,688.23
  5. Step 5: Solve for x
    x = 14,368,703,688.23/138,721.66
  6. Step 6: Final answer
    x = 103,579.38

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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.