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Finding the Fourth Proportional to 113,970.80, 157,279.56 and 63,669.80

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Solution

The fourth proportional to 113,970.80, 157,279.56 and 63,669.80 is: 87,864.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,970.80 : 157,279.56 = 63,669.80 : x
  2. Step 2: Convert to fraction form
    113,970.80/157,279.56 = 63,669.80/x
  3. Step 3: Cross multiply
    113,970.80x = 157,279.56 × 63,669.80
  4. Step 4: Simplify right side
    113,970.80x = 10,013,958,129.29
  5. Step 5: Solve for x
    x = 10,013,958,129.29/113,970.80
  6. Step 6: Final answer
    x = 87,864.24

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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.