Home / 130,508.90-180,099.75-76,071.26

Finding the Fourth Proportional to 130,508.90, 180,099.75 and 76,071.26

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Solution

The fourth proportional to 130,508.90, 180,099.75 and 76,071.26 is: 104,976.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,508.90 : 180,099.75 = 76,071.26 : x
  2. Step 2: Convert to fraction form
    130,508.90/180,099.75 = 76,071.26/x
  3. Step 3: Cross multiply
    130,508.90x = 180,099.75 × 76,071.26
  4. Step 4: Simplify right side
    130,508.90x = 13,700,414,908.19
  5. Step 5: Solve for x
    x = 13,700,414,908.19/130,508.90
  6. Step 6: Final answer
    x = 104,976.86

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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.