Home / 145,972.20-218,612.70-98,970.60

Finding the Fourth Proportional to 145,972.20, 218,612.70 and 98,970.60

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Solution

The fourth proportional to 145,972.20, 218,612.70 and 98,970.60 is: 148,221.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,972.20 : 218,612.70 = 98,970.60 : x
  2. Step 2: Convert to fraction form
    145,972.20/218,612.70 = 98,970.60/x
  3. Step 3: Cross multiply
    145,972.20x = 218,612.70 × 98,970.60
  4. Step 4: Simplify right side
    145,972.20x = 21,636,230,086.62
  5. Step 5: Solve for x
    x = 21,636,230,086.62/145,972.20
  6. Step 6: Final answer
    x = 148,221.58

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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.