Home / 138,459.43-191,077.95-77,207.03

Finding the Fourth Proportional to 138,459.43, 191,077.95 and 77,207.03

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Solution

The fourth proportional to 138,459.43, 191,077.95 and 77,207.03 is: 106,547.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,459.43 : 191,077.95 = 77,207.03 : x
  2. Step 2: Convert to fraction form
    138,459.43/191,077.95 = 77,207.03/x
  3. Step 3: Cross multiply
    138,459.43x = 191,077.95 × 77,207.03
  4. Step 4: Simplify right side
    138,459.43x = 14,752,561,017.99
  5. Step 5: Solve for x
    x = 14,752,561,017.99/138,459.43
  6. Step 6: Final answer
    x = 106,547.90

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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.