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Finding the Fourth Proportional to 111,292.61, 153,606.98 and 102,325.91

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Solution

The fourth proportional to 111,292.61, 153,606.98 and 102,325.91 is: 141,231.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,292.61 : 153,606.98 = 102,325.91 : x
  2. Step 2: Convert to fraction form
    111,292.61/153,606.98 = 102,325.91/x
  3. Step 3: Cross multiply
    111,292.61x = 153,606.98 × 102,325.91
  4. Step 4: Simplify right side
    111,292.61x = 15,717,974,650.68
  5. Step 5: Solve for x
    x = 15,717,974,650.68/111,292.61
  6. Step 6: Final answer
    x = 141,231.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.