Home / 127,340.80-190,622.40-99,347.20

Finding the Fourth Proportional to 127,340.80, 190,622.40 and 99,347.20

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Solution

The fourth proportional to 127,340.80, 190,622.40 and 99,347.20 is: 148,717.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,340.80 : 190,622.40 = 99,347.20 : x
  2. Step 2: Convert to fraction form
    127,340.80/190,622.40 = 99,347.20/x
  3. Step 3: Cross multiply
    127,340.80x = 190,622.40 × 99,347.20
  4. Step 4: Simplify right side
    127,340.80x = 18,937,801,697.28
  5. Step 5: Solve for x
    x = 18,937,801,697.28/127,340.80
  6. Step 6: Final answer
    x = 148,717.47

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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.