Home / 127,778,403.60-191,667,605.40-120,220,131.60

Finding the Fourth Proportional to 127,778,403.60, 191,667,605.40 and 120,220,131.60

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Solution

The fourth proportional to 127,778,403.60, 191,667,605.40 and 120,220,131.60 is: 180,330,197.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,778,403.60 : 191,667,605.40 = 120,220,131.60 : x
  2. Step 2: Convert to fraction form
    127,778,403.60/191,667,605.40 = 120,220,131.60/x
  3. Step 3: Cross multiply
    127,778,403.60x = 191,667,605.40 × 120,220,131.60
  4. Step 4: Simplify right side
    127,778,403.60x = 23,042,304,744,644,872
  5. Step 5: Solve for x
    x = 23,042,304,744,644,872/127,778,403.60
  6. Step 6: Final answer
    x = 180,330,197.40

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1.5x scale

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.