Home / 121,781,695.34-168,059,988.46-66,027,223.58

Finding the Fourth Proportional to 121,781,695.34, 168,059,988.46 and 66,027,223.58

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Solution

The fourth proportional to 121,781,695.34, 168,059,988.46 and 66,027,223.58 is: 91,118,245.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,781,695.34 : 168,059,988.46 = 66,027,223.58 : x
  2. Step 2: Convert to fraction form
    121,781,695.34/168,059,988.46 = 66,027,223.58/x
  3. Step 3: Cross multiply
    121,781,695.34x = 168,059,988.46 × 66,027,223.58
  4. Step 4: Simplify right side
    121,781,695.34x = 11,096,534,431,771,140
  5. Step 5: Solve for x
    x = 11,096,534,431,771,140/121,781,695.34
  6. Step 6: Final answer
    x = 91,118,245.65

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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.