Home / 121,117,128.80-181,459,180.20-73,707,342.80

Finding the Fourth Proportional to 121,117,128.80, 181,459,180.20 and 73,707,342.80

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Solution

The fourth proportional to 121,117,128.80, 181,459,180.20 and 73,707,342.80 is: 110,429,252.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,117,128.80 : 181,459,180.20 = 73,707,342.80 : x
  2. Step 2: Convert to fraction form
    121,117,128.80/181,459,180.20 = 73,707,342.80/x
  3. Step 3: Cross multiply
    121,117,128.80x = 181,459,180.20 × 73,707,342.80
  4. Step 4: Simplify right side
    121,117,128.80x = 13,374,873,999,208,372
  5. Step 5: Solve for x
    x = 13,374,873,999,208,372/121,117,128.80
  6. Step 6: Final answer
    x = 110,429,252.51

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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.