Home / 130,219.98-196,306-121,539.96

Finding the Fourth Proportional to 130,219.98, 196,306 and 121,539.96

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Solution

The fourth proportional to 130,219.98, 196,306 and 121,539.96 is: 183,220.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,219.98 : 196,306 = 121,539.96 : x
  2. Step 2: Convert to fraction form
    130,219.98/196,306 = 121,539.96/x
  3. Step 3: Cross multiply
    130,219.98x = 196,306 × 121,539.96
  4. Step 4: Simplify right side
    130,219.98x = 23,859,023,387.76
  5. Step 5: Solve for x
    x = 23,859,023,387.76/130,219.98
  6. Step 6: Final answer
    x = 183,220.91

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.