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Finding the Fourth Proportional to 131,903.40, 197,855.10 and 53,017.68

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Solution

The fourth proportional to 131,903.40, 197,855.10 and 53,017.68 is: 79,526.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,903.40 : 197,855.10 = 53,017.68 : x
  2. Step 2: Convert to fraction form
    131,903.40/197,855.10 = 53,017.68/x
  3. Step 3: Cross multiply
    131,903.40x = 197,855.10 × 53,017.68
  4. Step 4: Simplify right side
    131,903.40x = 10,489,818,378.17
  5. Step 5: Solve for x
    x = 10,489,818,378.17/131,903.40
  6. Step 6: Final answer
    x = 79,526.52

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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.