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Finding the Fourth Proportional to 98,703.53, 136,207.25 and 56,253.86

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Solution

The fourth proportional to 98,703.53, 136,207.25 and 56,253.86 is: 77,628.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,703.53 : 136,207.25 = 56,253.86 : x
  2. Step 2: Convert to fraction form
    98,703.53/136,207.25 = 56,253.86/x
  3. Step 3: Cross multiply
    98,703.53x = 136,207.25 × 56,253.86
  4. Step 4: Simplify right side
    98,703.53x = 7,662,182,891.45
  5. Step 5: Solve for x
    x = 7,662,182,891.45/98,703.53
  6. Step 6: Final answer
    x = 77,628.26

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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.