Home / 100,989,010.12-139,365,472.98-54,579,155.08

Finding the Fourth Proportional to 100,989,010.12, 139,365,472.98 and 54,579,155.08

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Solution

The fourth proportional to 100,989,010.12, 139,365,472.98 and 54,579,155.08 is: 75,319,579.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,989,010.12 : 139,365,472.98 = 54,579,155.08 : x
  2. Step 2: Convert to fraction form
    100,989,010.12/139,365,472.98 = 54,579,155.08/x
  3. Step 3: Cross multiply
    100,989,010.12x = 139,365,472.98 × 54,579,155.08
  4. Step 4: Simplify right side
    100,989,010.12x = 7,606,449,762,572,969
  5. Step 5: Solve for x
    x = 7,606,449,762,572,969/100,989,010.12
  6. Step 6: Final answer
    x = 75,319,579.36

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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.