Home / 100,537,420-138,743,477.08-55,887,584.26

Finding the Fourth Proportional to 100,537,420, 138,743,477.08 and 55,887,584.26

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Solution

The fourth proportional to 100,537,420, 138,743,477.08 and 55,887,584.26 is: 77,125,887.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,537,420 : 138,743,477.08 = 55,887,584.26 : x
  2. Step 2: Convert to fraction form
    100,537,420/138,743,477.08 = 55,887,584.26/x
  3. Step 3: Cross multiply
    100,537,420x = 138,743,477.08 × 55,887,584.26
  4. Step 4: Simplify right side
    100,537,420x = 7,754,037,765,833,879
  5. Step 5: Solve for x
    x = 7,754,037,765,833,879/100,537,420
  6. Step 6: Final answer
    x = 77,125,887.71

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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.