Home / 100,688.40-151,036.25-34,134.95

Finding the Fourth Proportional to 100,688.40, 151,036.25 and 34,134.95

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Solution

The fourth proportional to 100,688.40, 151,036.25 and 34,134.95 is: 51,203.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,688.40 : 151,036.25 = 34,134.95 : x
  2. Step 2: Convert to fraction form
    100,688.40/151,036.25 = 34,134.95/x
  3. Step 3: Cross multiply
    100,688.40x = 151,036.25 × 34,134.95
  4. Step 4: Simplify right side
    100,688.40x = 5,155,615,048.85
  5. Step 5: Solve for x
    x = 5,155,615,048.85/100,688.40
  6. Step 6: Final answer
    x = 51,203.66

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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.