Home / 495,109.20-742,663.80-121,132.20

Finding the Fourth Proportional to 495,109.20, 742,663.80 and 121,132.20

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Solution

The fourth proportional to 495,109.20, 742,663.80 and 121,132.20 is: 181,698.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,109.20 : 742,663.80 = 121,132.20 : x
  2. Step 2: Convert to fraction form
    495,109.20/742,663.80 = 121,132.20/x
  3. Step 3: Cross multiply
    495,109.20x = 742,663.80 × 121,132.20
  4. Step 4: Simplify right side
    495,109.20x = 89,960,499,954.36
  5. Step 5: Solve for x
    x = 89,960,499,954.36/495,109.20
  6. Step 6: Final answer
    x = 181,698.30

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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.