Home / 121,133,036.36-167,162,739.80-66,128,892.86

Finding the Fourth Proportional to 121,133,036.36, 167,162,739.80 and 66,128,892.86

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Solution

The fourth proportional to 121,133,036.36, 167,162,739.80 and 66,128,892.86 is: 91,257,407.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,133,036.36 : 167,162,739.80 = 66,128,892.86 : x
  2. Step 2: Convert to fraction form
    121,133,036.36/167,162,739.80 = 66,128,892.86/x
  3. Step 3: Cross multiply
    121,133,036.36x = 167,162,739.80 × 66,128,892.86
  4. Step 4: Simplify right side
    121,133,036.36x = 11,054,286,910,418,258
  5. Step 5: Solve for x
    x = 11,054,286,910,418,258/121,133,036.36
  6. Step 6: Final answer
    x = 91,257,407.91

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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.