Home / 130,489.23-180,066.61-76,763.87

Finding the Fourth Proportional to 130,489.23, 180,066.61 and 76,763.87

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Solution

The fourth proportional to 130,489.23, 180,066.61 and 76,763.87 is: 105,929.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,489.23 : 180,066.61 = 76,763.87 : x
  2. Step 2: Convert to fraction form
    130,489.23/180,066.61 = 76,763.87/x
  3. Step 3: Cross multiply
    130,489.23x = 180,066.61 × 76,763.87
  4. Step 4: Simplify right side
    130,489.23x = 13,822,608,749.14
  5. Step 5: Solve for x
    x = 13,822,608,749.14/130,489.23
  6. Step 6: Final answer
    x = 105,929.12

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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.