Home / 138,008.82-190,430.82-77,568.24

Finding the Fourth Proportional to 138,008.82, 190,430.82 and 77,568.24

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Solution

The fourth proportional to 138,008.82, 190,430.82 and 77,568.24 is: 107,032.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,008.82 : 190,430.82 = 77,568.24 : x
  2. Step 2: Convert to fraction form
    138,008.82/190,430.82 = 77,568.24/x
  3. Step 3: Cross multiply
    138,008.82x = 190,430.82 × 77,568.24
  4. Step 4: Simplify right side
    138,008.82x = 14,771,383,549.16
  5. Step 5: Solve for x
    x = 14,771,383,549.16/138,008.82
  6. Step 6: Final answer
    x = 107,032.17

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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.