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Finding the Fourth Proportional to 111,395.18, 153,465.44 and 91,133.98

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Solution

The fourth proportional to 111,395.18, 153,465.44 and 91,133.98 is: 125,552.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,395.18 : 153,465.44 = 91,133.98 : x
  2. Step 2: Convert to fraction form
    111,395.18/153,465.44 = 91,133.98/x
  3. Step 3: Cross multiply
    111,395.18x = 153,465.44 × 91,133.98
  4. Step 4: Simplify right side
    111,395.18x = 13,985,915,500.32
  5. Step 5: Solve for x
    x = 13,985,915,500.32/111,395.18
  6. Step 6: Final answer
    x = 125,552.25

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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.