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Finding the Fourth Proportional to 128,046.54, 191,974.64 and 61,423.22

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Solution

The fourth proportional to 128,046.54, 191,974.64 and 61,423.22 is: 92,089.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,046.54 : 191,974.64 = 61,423.22 : x
  2. Step 2: Convert to fraction form
    128,046.54/191,974.64 = 61,423.22/x
  3. Step 3: Cross multiply
    128,046.54x = 191,974.64 × 61,423.22
  4. Step 4: Simplify right side
    128,046.54x = 11,791,700,547.14
  5. Step 5: Solve for x
    x = 11,791,700,547.14/128,046.54
  6. Step 6: Final answer
    x = 92,089.18

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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.