Home / 138,767.36-191,498.95-75,105.16

Finding the Fourth Proportional to 138,767.36, 191,498.95 and 75,105.16

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Solution

The fourth proportional to 138,767.36, 191,498.95 and 75,105.16 is: 103,645.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,767.36 : 191,498.95 = 75,105.16 : x
  2. Step 2: Convert to fraction form
    138,767.36/191,498.95 = 75,105.16/x
  3. Step 3: Cross multiply
    138,767.36x = 191,498.95 × 75,105.16
  4. Step 4: Simplify right side
    138,767.36x = 14,382,559,279.58
  5. Step 5: Solve for x
    x = 14,382,559,279.58/138,767.36
  6. Step 6: Final answer
    x = 103,645.12

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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.