Home / 100,039,221.25-138,054,125.33-54,254,133.25

Finding the Fourth Proportional to 100,039,221.25, 138,054,125.33 and 54,254,133.25

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Solution

The fourth proportional to 100,039,221.25, 138,054,125.33 and 54,254,133.25 is: 74,870,703.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,039,221.25 : 138,054,125.33 = 54,254,133.25 : x
  2. Step 2: Convert to fraction form
    100,039,221.25/138,054,125.33 = 54,254,133.25/x
  3. Step 3: Cross multiply
    100,039,221.25x = 138,054,125.33 × 54,254,133.25
  4. Step 4: Simplify right side
    100,039,221.25x = 7,490,006,911,366,021
  5. Step 5: Solve for x
    x = 7,490,006,911,366,021/100,039,221.25
  6. Step 6: Final answer
    x = 74,870,703.89

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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.