Home / 145,161,243.60-217,760,527.80-72,415,208.40

Finding the Fourth Proportional to 145,161,243.60, 217,760,527.80 and 72,415,208.40

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Solution

The fourth proportional to 145,161,243.60, 217,760,527.80 and 72,415,208.40 is: 108,632,122.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,161,243.60 : 217,760,527.80 = 72,415,208.40 : x
  2. Step 2: Convert to fraction form
    145,161,243.60/217,760,527.80 = 72,415,208.40/x
  3. Step 3: Cross multiply
    145,161,243.60x = 217,760,527.80 × 72,415,208.40
  4. Step 4: Simplify right side
    145,161,243.60x = 15,769,174,001,930,996
  5. Step 5: Solve for x
    x = 15,769,174,001,930,996/145,161,243.60
  6. Step 6: Final answer
    x = 108,632,122.53

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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.