Home / 101,248.15-151,790.05-42,128.07

Finding the Fourth Proportional to 101,248.15, 151,790.05 and 42,128.07

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Solution

The fourth proportional to 101,248.15, 151,790.05 and 42,128.07 is: 63,157.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,248.15 : 151,790.05 = 42,128.07 : x
  2. Step 2: Convert to fraction form
    101,248.15/151,790.05 = 42,128.07/x
  3. Step 3: Cross multiply
    101,248.15x = 151,790.05 × 42,128.07
  4. Step 4: Simplify right side
    101,248.15x = 6,394,621,851.70
  5. Step 5: Solve for x
    x = 6,394,621,851.70/101,248.15
  6. Step 6: Final answer
    x = 63,157.91

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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.