Home / 127,121.02-190,622.28-47,155.78

Finding the Fourth Proportional to 127,121.02, 190,622.28 and 47,155.78

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Solution

The fourth proportional to 127,121.02, 190,622.28 and 47,155.78 is: 70,711.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,121.02 : 190,622.28 = 47,155.78 : x
  2. Step 2: Convert to fraction form
    127,121.02/190,622.28 = 47,155.78/x
  3. Step 3: Cross multiply
    127,121.02x = 190,622.28 × 47,155.78
  4. Step 4: Simplify right side
    127,121.02x = 8,988,942,298.78
  5. Step 5: Solve for x
    x = 8,988,942,298.78/127,121.02
  6. Step 6: Final answer
    x = 70,711.69

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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.