Home / 138,973.01-191,782.75-75,310.81

Finding the Fourth Proportional to 138,973.01, 191,782.75 and 75,310.81

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Solution

The fourth proportional to 138,973.01, 191,782.75 and 75,310.81 is: 103,928.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,973.01 : 191,782.75 = 75,310.81 : x
  2. Step 2: Convert to fraction form
    138,973.01/191,782.75 = 75,310.81/x
  3. Step 3: Cross multiply
    138,973.01x = 191,782.75 × 75,310.81
  4. Step 4: Simplify right side
    138,973.01x = 14,443,312,911.06
  5. Step 5: Solve for x
    x = 14,443,312,911.06/138,973.01
  6. Step 6: Final answer
    x = 103,928.91

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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.