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Finding the Fourth Proportional to 98,159.32, 135,466.86 and 55,720.59

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Solution

The fourth proportional to 98,159.32, 135,466.86 and 55,720.59 is: 76,898.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,159.32 : 135,466.86 = 55,720.59 : x
  2. Step 2: Convert to fraction form
    98,159.32/135,466.86 = 55,720.59/x
  3. Step 3: Cross multiply
    98,159.32x = 135,466.86 × 55,720.59
  4. Step 4: Simplify right side
    98,159.32x = 7,548,293,364.65
  5. Step 5: Solve for x
    x = 7,548,293,364.65/98,159.32
  6. Step 6: Final answer
    x = 76,898.39

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.