Home / 138,838,054.70-191,592,363.12-76,112,007.38

Finding the Fourth Proportional to 138,838,054.70, 191,592,363.12 and 76,112,007.38

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Solution

The fourth proportional to 138,838,054.70, 191,592,363.12 and 76,112,007.38 is: 105,032,293.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,838,054.70 : 191,592,363.12 = 76,112,007.38 : x
  2. Step 2: Convert to fraction form
    138,838,054.70/191,592,363.12 = 76,112,007.38/x
  3. Step 3: Cross multiply
    138,838,054.70x = 191,592,363.12 × 76,112,007.38
  4. Step 4: Simplify right side
    138,838,054.70x = 14,582,479,355,741,080
  5. Step 5: Solve for x
    x = 14,582,479,355,741,080/138,838,054.70
  6. Step 6: Final answer
    x = 105,032,293.83

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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.