Home / 495,149.80-742,724.70-121,172.80

Finding the Fourth Proportional to 495,149.80, 742,724.70 and 121,172.80

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Solution

The fourth proportional to 495,149.80, 742,724.70 and 121,172.80 is: 181,759.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,149.80 : 742,724.70 = 121,172.80 : x
  2. Step 2: Convert to fraction form
    495,149.80/742,724.70 = 121,172.80/x
  3. Step 3: Cross multiply
    495,149.80x = 742,724.70 × 121,172.80
  4. Step 4: Simplify right side
    495,149.80x = 89,998,031,528.16
  5. Step 5: Solve for x
    x = 89,998,031,528.16/495,149.80
  6. Step 6: Final answer
    x = 181,759.20

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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.