Home / 125,342,109.84-172,972,737.72-78,326,484.42

Finding the Fourth Proportional to 125,342,109.84, 172,972,737.72 and 78,326,484.42

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Solution

The fourth proportional to 125,342,109.84, 172,972,737.72 and 78,326,484.42 is: 108,090,939.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,342,109.84 : 172,972,737.72 = 78,326,484.42 : x
  2. Step 2: Convert to fraction form
    125,342,109.84/172,972,737.72 = 78,326,484.42/x
  3. Step 3: Cross multiply
    125,342,109.84x = 172,972,737.72 × 78,326,484.42
  4. Step 4: Simplify right side
    125,342,109.84x = 13,548,346,446,110,326
  5. Step 5: Solve for x
    x = 13,548,346,446,110,326/125,342,109.84
  6. Step 6: Final answer
    x = 108,090,939.78

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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.