Home / 127,130.78-190,697.55-38,385.02

Finding the Fourth Proportional to 127,130.78, 190,697.55 and 38,385.02

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Solution

The fourth proportional to 127,130.78, 190,697.55 and 38,385.02 is: 57,577.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,130.78 : 190,697.55 = 38,385.02 : x
  2. Step 2: Convert to fraction form
    127,130.78/190,697.55 = 38,385.02/x
  3. Step 3: Cross multiply
    127,130.78x = 190,697.55 × 38,385.02
  4. Step 4: Simplify right side
    127,130.78x = 7,319,929,270.70
  5. Step 5: Solve for x
    x = 7,319,929,270.70/127,130.78
  6. Step 6: Final answer
    x = 57,577.95

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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.