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Finding the Fourth Proportional to 111,325.88, 153,636 and 66,030.68

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Solution

The fourth proportional to 111,325.88, 153,636 and 66,030.68 is: 91,126.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,325.88 : 153,636 = 66,030.68 : x
  2. Step 2: Convert to fraction form
    111,325.88/153,636 = 66,030.68/x
  3. Step 3: Cross multiply
    111,325.88x = 153,636 × 66,030.68
  4. Step 4: Simplify right side
    111,325.88x = 10,144,689,552.48
  5. Step 5: Solve for x
    x = 10,144,689,552.48/111,325.88
  6. Step 6: Final answer
    x = 91,126.07

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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.