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Finding the Fourth Proportional to 115,130.33, 157,729.10 and 110,815.79

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Solution

The fourth proportional to 115,130.33, 157,729.10 and 110,815.79 is: 151,818.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,130.33 : 157,729.10 = 110,815.79 : x
  2. Step 2: Convert to fraction form
    115,130.33/157,729.10 = 110,815.79/x
  3. Step 3: Cross multiply
    115,130.33x = 157,729.10 × 110,815.79
  4. Step 4: Simplify right side
    115,130.33x = 17,478,873,479.76
  5. Step 5: Solve for x
    x = 17,478,873,479.76/115,130.33
  6. Step 6: Final answer
    x = 151,818.15

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.