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Finding the Fourth Proportional to 98,612.88, 136,083.15 and 56,185.08

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Solution

The fourth proportional to 98,612.88, 136,083.15 and 56,185.08 is: 77,533.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,612.88 : 136,083.15 = 56,185.08 : x
  2. Step 2: Convert to fraction form
    98,612.88/136,083.15 = 56,185.08/x
  3. Step 3: Cross multiply
    98,612.88x = 136,083.15 × 56,185.08
  4. Step 4: Simplify right side
    98,612.88x = 7,645,842,669.40
  5. Step 5: Solve for x
    x = 7,645,842,669.40/98,612.88
  6. Step 6: Final answer
    x = 77,533.92

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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.