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Finding the Fourth Proportional to 156,700.40, 235,050.60 and 133,080.80

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Solution

The fourth proportional to 156,700.40, 235,050.60 and 133,080.80 is: 199,621.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,700.40 : 235,050.60 = 133,080.80 : x
  2. Step 2: Convert to fraction form
    156,700.40/235,050.60 = 133,080.80/x
  3. Step 3: Cross multiply
    156,700.40x = 235,050.60 × 133,080.80
  4. Step 4: Simplify right side
    156,700.40x = 31,280,721,888.48
  5. Step 5: Solve for x
    x = 31,280,721,888.48/156,700.40
  6. Step 6: Final answer
    x = 199,621.20

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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.