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Finding the Fourth Proportional to 132,153.80, 197,825.70 and 72,807.80

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Solution

The fourth proportional to 132,153.80, 197,825.70 and 72,807.80 is: 108,988.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,153.80 : 197,825.70 = 72,807.80 : x
  2. Step 2: Convert to fraction form
    132,153.80/197,825.70 = 72,807.80/x
  3. Step 3: Cross multiply
    132,153.80x = 197,825.70 × 72,807.80
  4. Step 4: Simplify right side
    132,153.80x = 14,403,254,000.46
  5. Step 5: Solve for x
    x = 14,403,254,000.46/132,153.80
  6. Step 6: Final answer
    x = 108,988.57

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1.5x scale

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.