Home / 98,416.94-135,837.53-64,405.72

Finding the Fourth Proportional to 98,416.94, 135,837.53 and 64,405.72

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Solution

The fourth proportional to 98,416.94, 135,837.53 and 64,405.72 is: 88,894.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,416.94 : 135,837.53 = 64,405.72 : x
  2. Step 2: Convert to fraction form
    98,416.94/135,837.53 = 64,405.72/x
  3. Step 3: Cross multiply
    98,416.94x = 135,837.53 × 64,405.72
  4. Step 4: Simplify right side
    98,416.94x = 8,748,713,261.05
  5. Step 5: Solve for x
    x = 8,748,713,261.05/98,416.94
  6. Step 6: Final answer
    x = 88,894.39

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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.