Home / 123,840,488-170,759,465.87-79,127,387.31

Finding the Fourth Proportional to 123,840,488, 170,759,465.87 and 79,127,387.31

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Solution

The fourth proportional to 123,840,488, 170,759,465.87 and 79,127,387.31 is: 109,106,081.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,840,488 : 170,759,465.87 = 79,127,387.31 : x
  2. Step 2: Convert to fraction form
    123,840,488/170,759,465.87 = 79,127,387.31/x
  3. Step 3: Cross multiply
    123,840,488x = 170,759,465.87 × 79,127,387.31
  4. Step 4: Simplify right side
    123,840,488x = 13,511,750,392,744,216
  5. Step 5: Solve for x
    x = 13,511,750,392,744,216/123,840,488
  6. Step 6: Final answer
    x = 109,106,081.63

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1.5x scale

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.