Home / 131,021.10-180,816.54-99,134.64

Finding the Fourth Proportional to 131,021.10, 180,816.54 and 99,134.64

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Solution

The fourth proportional to 131,021.10, 180,816.54 and 99,134.64 is: 136,811.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,021.10 : 180,816.54 = 99,134.64 : x
  2. Step 2: Convert to fraction form
    131,021.10/180,816.54 = 99,134.64/x
  3. Step 3: Cross multiply
    131,021.10x = 180,816.54 × 99,134.64
  4. Step 4: Simplify right side
    131,021.10x = 17,925,182,598.95
  5. Step 5: Solve for x
    x = 17,925,182,598.95/131,021.10
  6. Step 6: Final answer
    x = 136,811.42

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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.