Home / 126,036,139.80-189,054,209.70-45,265,272.60

Finding the Fourth Proportional to 126,036,139.80, 189,054,209.70 and 45,265,272.60

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Solution

The fourth proportional to 126,036,139.80, 189,054,209.70 and 45,265,272.60 is: 67,897,908.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,036,139.80 : 189,054,209.70 = 45,265,272.60 : x
  2. Step 2: Convert to fraction form
    126,036,139.80/189,054,209.70 = 45,265,272.60/x
  3. Step 3: Cross multiply
    126,036,139.80x = 189,054,209.70 × 45,265,272.60
  4. Step 4: Simplify right side
    126,036,139.80x = 8,557,590,338,248,064
  5. Step 5: Solve for x
    x = 8,557,590,338,248,064/126,036,139.80
  6. Step 6: Final answer
    x = 67,897,908.90

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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.