Home / 137,965.23-190,400.76-76,718.30

Finding the Fourth Proportional to 137,965.23, 190,400.76 and 76,718.30

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Solution

The fourth proportional to 137,965.23, 190,400.76 and 76,718.30 is: 105,876.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,965.23 : 190,400.76 = 76,718.30 : x
  2. Step 2: Convert to fraction form
    137,965.23/190,400.76 = 76,718.30/x
  3. Step 3: Cross multiply
    137,965.23x = 190,400.76 × 76,718.30
  4. Step 4: Simplify right side
    137,965.23x = 14,607,221,673.90
  5. Step 5: Solve for x
    x = 14,607,221,673.90/137,965.23
  6. Step 6: Final answer
    x = 105,876.11

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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.