Home / 156,839.40-235,259.10-38,509.20

Finding the Fourth Proportional to 156,839.40, 235,259.10 and 38,509.20

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Solution

The fourth proportional to 156,839.40, 235,259.10 and 38,509.20 is: 57,763.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,839.40 : 235,259.10 = 38,509.20 : x
  2. Step 2: Convert to fraction form
    156,839.40/235,259.10 = 38,509.20/x
  3. Step 3: Cross multiply
    156,839.40x = 235,259.10 × 38,509.20
  4. Step 4: Simplify right side
    156,839.40x = 9,059,639,733.72
  5. Step 5: Solve for x
    x = 9,059,639,733.72/156,839.40
  6. Step 6: Final answer
    x = 57,763.80

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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.