Home / 127,644.72-191,435.40-38,875.20

Finding the Fourth Proportional to 127,644.72, 191,435.40 and 38,875.20

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Solution

The fourth proportional to 127,644.72, 191,435.40 and 38,875.20 is: 58,303.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,644.72 : 191,435.40 = 38,875.20 : x
  2. Step 2: Convert to fraction form
    127,644.72/191,435.40 = 38,875.20/x
  3. Step 3: Cross multiply
    127,644.72x = 191,435.40 × 38,875.20
  4. Step 4: Simplify right side
    127,644.72x = 7,442,089,462.08
  5. Step 5: Solve for x
    x = 7,442,089,462.08/127,644.72
  6. Step 6: Final answer
    x = 58,303.15

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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.