Home / 495,107.20-742,660.80-121,130.20

Finding the Fourth Proportional to 495,107.20, 742,660.80 and 121,130.20

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Solution

The fourth proportional to 495,107.20, 742,660.80 and 121,130.20 is: 181,695.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,107.20 : 742,660.80 = 121,130.20 : x
  2. Step 2: Convert to fraction form
    495,107.20/742,660.80 = 121,130.20/x
  3. Step 3: Cross multiply
    495,107.20x = 742,660.80 × 121,130.20
  4. Step 4: Simplify right side
    495,107.20x = 89,958,651,236.16
  5. Step 5: Solve for x
    x = 89,958,651,236.16/495,107.20
  6. Step 6: Final answer
    x = 181,695.30

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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.