Home / 125,341,965.48-172,972,538.40-78,326,339.43

Finding the Fourth Proportional to 125,341,965.48, 172,972,538.40 and 78,326,339.43

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Solution

The fourth proportional to 125,341,965.48, 172,972,538.40 and 78,326,339.43 is: 108,090,739.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,341,965.48 : 172,972,538.40 = 78,326,339.43 : x
  2. Step 2: Convert to fraction form
    125,341,965.48/172,972,538.40 = 78,326,339.43/x
  3. Step 3: Cross multiply
    125,341,965.48x = 172,972,538.40 × 78,326,339.43
  4. Step 4: Simplify right side
    125,341,965.48x = 13,548,305,754,787,110
  5. Step 5: Solve for x
    x = 13,548,305,754,787,110/125,341,965.48
  6. Step 6: Final answer
    x = 108,090,739.63

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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.