Home / 130,836,634.20-180,555,749.28-72,101,406.72

Finding the Fourth Proportional to 130,836,634.20, 180,555,749.28 and 72,101,406.72

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Solution

The fourth proportional to 130,836,634.20, 180,555,749.28 and 72,101,406.72 is: 99,500,599.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,836,634.20 : 180,555,749.28 = 72,101,406.72 : x
  2. Step 2: Convert to fraction form
    130,836,634.20/180,555,749.28 = 72,101,406.72/x
  3. Step 3: Cross multiply
    130,836,634.20x = 180,555,749.28 × 72,101,406.72
  4. Step 4: Simplify right side
    130,836,634.20x = 13,018,323,514,471,628
  5. Step 5: Solve for x
    x = 13,018,323,514,471,628/130,836,634.20
  6. Step 6: Final answer
    x = 99,500,599.31

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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.