Home / 130,662,980.82-180,214,197.64-81,132,679.62

Finding the Fourth Proportional to 130,662,980.82, 180,214,197.64 and 81,132,679.62

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Solution

The fourth proportional to 130,662,980.82, 180,214,197.64 and 81,132,679.62 is: 111,900,560.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,662,980.82 : 180,214,197.64 = 81,132,679.62 : x
  2. Step 2: Convert to fraction form
    130,662,980.82/180,214,197.64 = 81,132,679.62/x
  3. Step 3: Cross multiply
    130,662,980.82x = 180,214,197.64 × 81,132,679.62
  4. Step 4: Simplify right side
    130,662,980.82x = 14,621,260,759,898,648
  5. Step 5: Solve for x
    x = 14,621,260,759,898,648/130,662,980.82
  6. Step 6: Final answer
    x = 111,900,560.27

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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.