Home / 138,313.08-190,870.02-77,883.84

Finding the Fourth Proportional to 138,313.08, 190,870.02 and 77,883.84

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Solution

The fourth proportional to 138,313.08, 190,870.02 and 77,883.84 is: 107,478.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,313.08 : 190,870.02 = 77,883.84 : x
  2. Step 2: Convert to fraction form
    138,313.08/190,870.02 = 77,883.84/x
  3. Step 3: Cross multiply
    138,313.08x = 190,870.02 × 77,883.84
  4. Step 4: Simplify right side
    138,313.08x = 14,865,690,098.48
  5. Step 5: Solve for x
    x = 14,865,690,098.48/138,313.08
  6. Step 6: Final answer
    x = 107,478.56

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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.