Home / 136,684.20-205,058.70-70,134.60

Finding the Fourth Proportional to 136,684.20, 205,058.70 and 70,134.60

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Solution

The fourth proportional to 136,684.20, 205,058.70 and 70,134.60 is: 105,218.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,684.20 : 205,058.70 = 70,134.60 : x
  2. Step 2: Convert to fraction form
    136,684.20/205,058.70 = 70,134.60/x
  3. Step 3: Cross multiply
    136,684.20x = 205,058.70 × 70,134.60
  4. Step 4: Simplify right side
    136,684.20x = 14,381,709,901.02
  5. Step 5: Solve for x
    x = 14,381,709,901.02/136,684.20
  6. Step 6: Final answer
    x = 105,218.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.