Home / 220,768,125.89-304,666,512.47-121,655,257.79

Finding the Fourth Proportional to 220,768,125.89, 304,666,512.47 and 121,655,257.79

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Solution

The fourth proportional to 220,768,125.89, 304,666,512.47 and 121,655,257.79 is: 167,887,836.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,768,125.89 : 304,666,512.47 = 121,655,257.79 : x
  2. Step 2: Convert to fraction form
    220,768,125.89/304,666,512.47 = 121,655,257.79/x
  3. Step 3: Cross multiply
    220,768,125.89x = 304,666,512.47 × 121,655,257.79
  4. Step 4: Simplify right side
    220,768,125.89x = 37,064,283,115,127,696
  5. Step 5: Solve for x
    x = 37,064,283,115,127,696/220,768,125.89
  6. Step 6: Final answer
    x = 167,887,836.91

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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.