Home / 138,641,280.48-191,330,947.44-76,761,620.64

Finding the Fourth Proportional to 138,641,280.48, 191,330,947.44 and 76,761,620.64

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Solution

The fourth proportional to 138,641,280.48, 191,330,947.44 and 76,761,620.64 is: 105,934,347.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,641,280.48 : 191,330,947.44 = 76,761,620.64 : x
  2. Step 2: Convert to fraction form
    138,641,280.48/191,330,947.44 = 76,761,620.64/x
  3. Step 3: Cross multiply
    138,641,280.48x = 191,330,947.44 × 76,761,620.64
  4. Step 4: Simplify right side
    138,641,280.48x = 14,686,873,604,081,060
  5. Step 5: Solve for x
    x = 14,686,873,604,081,060/138,641,280.48
  6. Step 6: Final answer
    x = 105,934,347.64

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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.