Home / 130,836,613.30-180,555,720.45-72,101,385.82

Finding the Fourth Proportional to 130,836,613.30, 180,555,720.45 and 72,101,385.82

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Solution

The fourth proportional to 130,836,613.30, 180,555,720.45 and 72,101,385.82 is: 99,500,570.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,836,613.30 : 180,555,720.45 = 72,101,385.82 : x
  2. Step 2: Convert to fraction form
    130,836,613.30/180,555,720.45 = 72,101,385.82/x
  3. Step 3: Cross multiply
    130,836,613.30x = 180,555,720.45 × 72,101,385.82
  4. Step 4: Simplify right side
    130,836,613.30x = 13,018,317,662,173,512
  5. Step 5: Solve for x
    x = 13,018,317,662,173,512/130,836,613.30
  6. Step 6: Final answer
    x = 99,500,570.47

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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.