Home / 100,900.42-151,349.20-34,386.86

Finding the Fourth Proportional to 100,900.42, 151,349.20 and 34,386.86

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Solution

The fourth proportional to 100,900.42, 151,349.20 and 34,386.86 is: 51,579.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,900.42 : 151,349.20 = 34,386.86 : x
  2. Step 2: Convert to fraction form
    100,900.42/151,349.20 = 34,386.86/x
  3. Step 3: Cross multiply
    100,900.42x = 151,349.20 × 34,386.86
  4. Step 4: Simplify right side
    100,900.42x = 5,204,423,751.51
  5. Step 5: Solve for x
    x = 5,204,423,751.51/100,900.42
  6. Step 6: Final answer
    x = 51,579.80

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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.