Home / 121,189,985.61-181,810,512.53-39,302,478.74

Finding the Fourth Proportional to 121,189,985.61, 181,810,512.53 and 39,302,478.74

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Solution

The fourth proportional to 121,189,985.61, 181,810,512.53 and 39,302,478.74 is: 58,961,998.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,189,985.61 : 181,810,512.53 = 39,302,478.74 : x
  2. Step 2: Convert to fraction form
    121,189,985.61/181,810,512.53 = 39,302,478.74/x
  3. Step 3: Cross multiply
    121,189,985.61x = 181,810,512.53 × 39,302,478.74
  4. Step 4: Simplify right side
    121,189,985.61x = 7,145,603,802,801,542
  5. Step 5: Solve for x
    x = 7,145,603,802,801,542/121,189,985.61
  6. Step 6: Final answer
    x = 58,961,998.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.