Home / 138,062.10-190,518.74-77,629.14

Finding the Fourth Proportional to 138,062.10, 190,518.74 and 77,629.14

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Solution

The fourth proportional to 138,062.10, 190,518.74 and 77,629.14 is: 107,124.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,062.10 : 190,518.74 = 77,629.14 : x
  2. Step 2: Convert to fraction form
    138,062.10/190,518.74 = 77,629.14/x
  3. Step 3: Cross multiply
    138,062.10x = 190,518.74 × 77,629.14
  4. Step 4: Simplify right side
    138,062.10x = 14,789,806,031.59
  5. Step 5: Solve for x
    x = 14,789,806,031.59/138,062.10
  6. Step 6: Final answer
    x = 107,124.30

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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.