Home / 138,464.13-191,090.58-77,214.46

Finding the Fourth Proportional to 138,464.13, 191,090.58 and 77,214.46

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Solution

The fourth proportional to 138,464.13, 191,090.58 and 77,214.46 is: 106,561.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,464.13 : 191,090.58 = 77,214.46 : x
  2. Step 2: Convert to fraction form
    138,464.13/191,090.58 = 77,214.46/x
  3. Step 3: Cross multiply
    138,464.13x = 191,090.58 × 77,214.46
  4. Step 4: Simplify right side
    138,464.13x = 14,754,955,945.79
  5. Step 5: Solve for x
    x = 14,754,955,945.79/138,464.13
  6. Step 6: Final answer
    x = 106,561.58

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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.