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Finding the Fourth Proportional to 113,970.49, 157,279.13 and 63,669.49

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Solution

The fourth proportional to 113,970.49, 157,279.13 and 63,669.49 is: 87,863.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,970.49 : 157,279.13 = 63,669.49 : x
  2. Step 2: Convert to fraction form
    113,970.49/157,279.13 = 63,669.49/x
  3. Step 3: Cross multiply
    113,970.49x = 157,279.13 × 63,669.49
  4. Step 4: Simplify right side
    113,970.49x = 10,013,881,994.74
  5. Step 5: Solve for x
    x = 10,013,881,994.74/113,970.49
  6. Step 6: Final answer
    x = 87,863.81

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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.