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Finding the Fourth Proportional to 113,802.88, 157,054.80 and 63,505.12

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Solution

The fourth proportional to 113,802.88, 157,054.80 and 63,505.12 is: 87,640.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,802.88 : 157,054.80 = 63,505.12 : x
  2. Step 2: Convert to fraction form
    113,802.88/157,054.80 = 63,505.12/x
  3. Step 3: Cross multiply
    113,802.88x = 157,054.80 × 63,505.12
  4. Step 4: Simplify right side
    113,802.88x = 9,973,783,920.58
  5. Step 5: Solve for x
    x = 9,973,783,920.58/113,802.88
  6. Step 6: Final answer
    x = 87,640.87

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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.