Home / 118,821.11-163,947.60-70,438.28

Finding the Fourth Proportional to 118,821.11, 163,947.60 and 70,438.28

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Solution

The fourth proportional to 118,821.11, 163,947.60 and 70,438.28 is: 97,189.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,821.11 : 163,947.60 = 70,438.28 : x
  2. Step 2: Convert to fraction form
    118,821.11/163,947.60 = 70,438.28/x
  3. Step 3: Cross multiply
    118,821.11x = 163,947.60 × 70,438.28
  4. Step 4: Simplify right side
    118,821.11x = 11,548,186,134.39
  5. Step 5: Solve for x
    x = 11,548,186,134.39/118,821.11
  6. Step 6: Final answer
    x = 97,189.69

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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.