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Finding the Fourth Proportional to 172,479,783.60, 258,845,646.60 and 121,461,447.60

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Solution

The fourth proportional to 172,479,783.60, 258,845,646.60 and 121,461,447.60 is: 182,280,881.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,479,783.60 : 258,845,646.60 = 121,461,447.60 : x
  2. Step 2: Convert to fraction form
    172,479,783.60/258,845,646.60 = 121,461,447.60/x
  3. Step 3: Cross multiply
    172,479,783.60x = 258,845,646.60 × 121,461,447.60
  4. Step 4: Simplify right side
    172,479,783.60x = 31,439,766,940,994,016
  5. Step 5: Solve for x
    x = 31,439,766,940,994,016/172,479,783.60
  6. Step 6: Final answer
    x = 182,280,881.18

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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.