Home / 156,690.56-235,061.76-77,807.36

Finding the Fourth Proportional to 156,690.56, 235,061.76 and 77,807.36

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Solution

The fourth proportional to 156,690.56, 235,061.76 and 77,807.36 is: 116,723.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,690.56 : 235,061.76 = 77,807.36 : x
  2. Step 2: Convert to fraction form
    156,690.56/235,061.76 = 77,807.36/x
  3. Step 3: Cross multiply
    156,690.56x = 235,061.76 × 77,807.36
  4. Step 4: Simplify right side
    156,690.56x = 18,289,534,982.55
  5. Step 5: Solve for x
    x = 18,289,534,982.55/156,690.56
  6. Step 6: Final answer
    x = 116,723.91

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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.