Home / 127,108.02-190,602.81-47,142.78

Finding the Fourth Proportional to 127,108.02, 190,602.81 and 47,142.78

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Solution

The fourth proportional to 127,108.02, 190,602.81 and 47,142.78 is: 70,692.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,108.02 : 190,602.81 = 47,142.78 : x
  2. Step 2: Convert to fraction form
    127,108.02/190,602.81 = 47,142.78/x
  3. Step 3: Cross multiply
    127,108.02x = 190,602.81 × 47,142.78
  4. Step 4: Simplify right side
    127,108.02x = 8,985,546,339.21
  5. Step 5: Solve for x
    x = 8,985,546,339.21/127,108.02
  6. Step 6: Final answer
    x = 70,692.21

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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.