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Finding the Fourth Proportional to 156,670.60, 235,005.90 and 119,345.80

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Solution

The fourth proportional to 156,670.60, 235,005.90 and 119,345.80 is: 179,018.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,670.60 : 235,005.90 = 119,345.80 : x
  2. Step 2: Convert to fraction form
    156,670.60/235,005.90 = 119,345.80/x
  3. Step 3: Cross multiply
    156,670.60x = 235,005.90 × 119,345.80
  4. Step 4: Simplify right side
    156,670.60x = 28,046,967,140.22
  5. Step 5: Solve for x
    x = 28,046,967,140.22/156,670.60
  6. Step 6: Final answer
    x = 179,018.70

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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.