Home / 130,065.09-179,486.04-72,704.50

Finding the Fourth Proportional to 130,065.09, 179,486.04 and 72,704.50

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Solution

The fourth proportional to 130,065.09, 179,486.04 and 72,704.50 is: 100,330.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,065.09 : 179,486.04 = 72,704.50 : x
  2. Step 2: Convert to fraction form
    130,065.09/179,486.04 = 72,704.50/x
  3. Step 3: Cross multiply
    130,065.09x = 179,486.04 × 72,704.50
  4. Step 4: Simplify right side
    130,065.09x = 13,049,442,795.18
  5. Step 5: Solve for x
    x = 13,049,442,795.18/130,065.09
  6. Step 6: Final answer
    x = 100,330.09

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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.