Home / 136,478.34-188,337.56-76,047.70

Finding the Fourth Proportional to 136,478.34, 188,337.56 and 76,047.70

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Solution

The fourth proportional to 136,478.34, 188,337.56 and 76,047.70 is: 104,944.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,478.34 : 188,337.56 = 76,047.70 : x
  2. Step 2: Convert to fraction form
    136,478.34/188,337.56 = 76,047.70/x
  3. Step 3: Cross multiply
    136,478.34x = 188,337.56 × 76,047.70
  4. Step 4: Simplify right side
    136,478.34x = 14,322,638,261.61
  5. Step 5: Solve for x
    x = 14,322,638,261.61/136,478.34
  6. Step 6: Final answer
    x = 104,944.41

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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.