Home / 98,687.64-136,190.94-53,978.52

Finding the Fourth Proportional to 98,687.64, 136,190.94 and 53,978.52

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Solution

The fourth proportional to 98,687.64, 136,190.94 and 53,978.52 is: 74,491.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,687.64 : 136,190.94 = 53,978.52 : x
  2. Step 2: Convert to fraction form
    98,687.64/136,190.94 = 53,978.52/x
  3. Step 3: Cross multiply
    98,687.64x = 136,190.94 × 53,978.52
  4. Step 4: Simplify right side
    98,687.64x = 7,351,385,378.61
  5. Step 5: Solve for x
    x = 7,351,385,378.61/98,687.64
  6. Step 6: Final answer
    x = 74,491.45

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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.