Home / 156,404,749.64-215,848,643.46-86,790,130.52

Finding the Fourth Proportional to 156,404,749.64, 215,848,643.46 and 86,790,130.52

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Solution

The fourth proportional to 156,404,749.64, 215,848,643.46 and 86,790,130.52 is: 119,775,978.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,404,749.64 : 215,848,643.46 = 86,790,130.52 : x
  2. Step 2: Convert to fraction form
    156,404,749.64/215,848,643.46 = 86,790,130.52/x
  3. Step 3: Cross multiply
    156,404,749.64x = 215,848,643.46 × 86,790,130.52
  4. Step 4: Simplify right side
    156,404,749.64x = 18,733,531,938,458,344
  5. Step 5: Solve for x
    x = 18,733,531,938,458,344/156,404,749.64
  6. Step 6: Final answer
    x = 119,775,978.55

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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.