Home / 154,215,141.84-212,815,635.12-83,650,574.88

Finding the Fourth Proportional to 154,215,141.84, 212,815,635.12 and 83,650,574.88

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Solution

The fourth proportional to 154,215,141.84, 212,815,635.12 and 83,650,574.88 is: 115,437,109.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,215,141.84 : 212,815,635.12 = 83,650,574.88 : x
  2. Step 2: Convert to fraction form
    154,215,141.84/212,815,635.12 = 83,650,574.88/x
  3. Step 3: Cross multiply
    154,215,141.84x = 212,815,635.12 × 83,650,574.88
  4. Step 4: Simplify right side
    154,215,141.84x = 17,802,150,221,240,318
  5. Step 5: Solve for x
    x = 17,802,150,221,240,318/154,215,141.84
  6. Step 6: Final answer
    x = 115,437,109.54

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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.