Home / 145,161,021.60-217,760,194.80-72,414,986.40

Finding the Fourth Proportional to 145,161,021.60, 217,760,194.80 and 72,414,986.40

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Solution

The fourth proportional to 145,161,021.60, 217,760,194.80 and 72,414,986.40 is: 108,631,789.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,161,021.60 : 217,760,194.80 = 72,414,986.40 : x
  2. Step 2: Convert to fraction form
    145,161,021.60/217,760,194.80 = 72,414,986.40/x
  3. Step 3: Cross multiply
    145,161,021.60x = 217,760,194.80 × 72,414,986.40
  4. Step 4: Simplify right side
    145,161,021.60x = 15,769,101,544,903,352
  5. Step 5: Solve for x
    x = 15,769,101,544,903,352/145,161,021.60
  6. Step 6: Final answer
    x = 108,631,789.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.