Home / 130,812.76-180,556.11-77,133.52

Finding the Fourth Proportional to 130,812.76, 180,556.11 and 77,133.52

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Solution

The fourth proportional to 130,812.76, 180,556.11 and 77,133.52 is: 106,464.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,812.76 : 180,556.11 = 77,133.52 : x
  2. Step 2: Convert to fraction form
    130,812.76/180,556.11 = 77,133.52/x
  3. Step 3: Cross multiply
    130,812.76x = 180,556.11 × 77,133.52
  4. Step 4: Simplify right side
    130,812.76x = 13,926,928,321.81
  5. Step 5: Solve for x
    x = 13,926,928,321.81/130,812.76
  6. Step 6: Final answer
    x = 106,464.60

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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.