Home / 156,731.40-235,250.70-77,934.60

Finding the Fourth Proportional to 156,731.40, 235,250.70 and 77,934.60

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Solution

The fourth proportional to 156,731.40, 235,250.70 and 77,934.60 is: 116,978.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,731.40 : 235,250.70 = 77,934.60 : x
  2. Step 2: Convert to fraction form
    156,731.40/235,250.70 = 77,934.60/x
  3. Step 3: Cross multiply
    156,731.40x = 235,250.70 × 77,934.60
  4. Step 4: Simplify right side
    156,731.40x = 18,334,169,204.22
  5. Step 5: Solve for x
    x = 18,334,169,204.22/156,731.40
  6. Step 6: Final answer
    x = 116,978.28

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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.