Home / 121,578,638.68-167,778,280.38-65,824,043.86

Finding the Fourth Proportional to 121,578,638.68, 167,778,280.38 and 65,824,043.86

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Solution

The fourth proportional to 121,578,638.68, 167,778,280.38 and 65,824,043.86 is: 90,837,050.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,578,638.68 : 167,778,280.38 = 65,824,043.86 : x
  2. Step 2: Convert to fraction form
    121,578,638.68/167,778,280.38 = 65,824,043.86/x
  3. Step 3: Cross multiply
    121,578,638.68x = 167,778,280.38 × 65,824,043.86
  4. Step 4: Simplify right side
    121,578,638.68x = 11,043,844,886,488,498
  5. Step 5: Solve for x
    x = 11,043,844,886,488,498/121,578,638.68
  6. Step 6: Final answer
    x = 90,837,050.05

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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.