Home / 138,260.72-190,803.35-77,833.50

Finding the Fourth Proportional to 138,260.72, 190,803.35 and 77,833.50

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Solution

The fourth proportional to 138,260.72, 190,803.35 and 77,833.50 is: 107,412.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,260.72 : 190,803.35 = 77,833.50 : x
  2. Step 2: Convert to fraction form
    138,260.72/190,803.35 = 77,833.50/x
  3. Step 3: Cross multiply
    138,260.72x = 190,803.35 × 77,833.50
  4. Step 4: Simplify right side
    138,260.72x = 14,850,892,153.06
  5. Step 5: Solve for x
    x = 14,850,892,153.06/138,260.72
  6. Step 6: Final answer
    x = 107,412.23

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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.