Home / 100,039,221.28-138,054,125.37-54,254,133.28

Finding the Fourth Proportional to 100,039,221.28, 138,054,125.37 and 54,254,133.28

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Solution

The fourth proportional to 100,039,221.28, 138,054,125.37 and 54,254,133.28 is: 74,870,703.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,039,221.28 : 138,054,125.37 = 54,254,133.28 : x
  2. Step 2: Convert to fraction form
    100,039,221.28/138,054,125.37 = 54,254,133.28/x
  3. Step 3: Cross multiply
    100,039,221.28x = 138,054,125.37 × 54,254,133.28
  4. Step 4: Simplify right side
    100,039,221.28x = 7,490,006,917,748,380
  5. Step 5: Solve for x
    x = 7,490,006,917,748,380/100,039,221.28
  6. Step 6: Final answer
    x = 74,870,703.93

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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.