Home / 121,873,920.48-168,189,105.52-66,869,762.40

Finding the Fourth Proportional to 121,873,920.48, 168,189,105.52 and 66,869,762.40

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Solution

The fourth proportional to 121,873,920.48, 168,189,105.52 and 66,869,762.40 is: 92,281,970.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,873,920.48 : 168,189,105.52 = 66,869,762.40 : x
  2. Step 2: Convert to fraction form
    121,873,920.48/168,189,105.52 = 66,869,762.40/x
  3. Step 3: Cross multiply
    121,873,920.48x = 168,189,105.52 × 66,869,762.40
  4. Step 4: Simplify right side
    121,873,920.48x = 11,246,765,524,390,928
  5. Step 5: Solve for x
    x = 11,246,765,524,390,928/121,873,920.48
  6. Step 6: Final answer
    x = 92,281,970.42

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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.