Home / 100,039,216.75-138,054,119.12-54,254,128.75

Finding the Fourth Proportional to 100,039,216.75, 138,054,119.12 and 54,254,128.75

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Solution

The fourth proportional to 100,039,216.75, 138,054,119.12 and 54,254,128.75 is: 74,870,697.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,039,216.75 : 138,054,119.12 = 54,254,128.75 : x
  2. Step 2: Convert to fraction form
    100,039,216.75/138,054,119.12 = 54,254,128.75/x
  3. Step 3: Cross multiply
    100,039,216.75x = 138,054,119.12 × 54,254,128.75
  4. Step 4: Simplify right side
    100,039,216.75x = 7,490,005,953,204,317
  5. Step 5: Solve for x
    x = 7,490,005,953,204,317/100,039,216.75
  6. Step 6: Final answer
    x = 74,870,697.68

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1.5x scale

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.