Home / 138,786.90-191,526.85-77,533.06

Finding the Fourth Proportional to 138,786.90, 191,526.85 and 77,533.06

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Solution

The fourth proportional to 138,786.90, 191,526.85 and 77,533.06 is: 106,996.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,786.90 : 191,526.85 = 77,533.06 : x
  2. Step 2: Convert to fraction form
    138,786.90/191,526.85 = 77,533.06/x
  3. Step 3: Cross multiply
    138,786.90x = 191,526.85 × 77,533.06
  4. Step 4: Simplify right side
    138,786.90x = 14,849,662,752.66
  5. Step 5: Solve for x
    x = 14,849,662,752.66/138,786.90
  6. Step 6: Final answer
    x = 106,996.14

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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.