Home / 154,464,374.40-231,696,561.60-81,653,020.80

Finding the Fourth Proportional to 154,464,374.40, 231,696,561.60 and 81,653,020.80

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Solution

The fourth proportional to 154,464,374.40, 231,696,561.60 and 81,653,020.80 is: 122,479,531.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,464,374.40 : 231,696,561.60 = 81,653,020.80 : x
  2. Step 2: Convert to fraction form
    154,464,374.40/231,696,561.60 = 81,653,020.80/x
  3. Step 3: Cross multiply
    154,464,374.40x = 231,696,561.60 × 81,653,020.80
  4. Step 4: Simplify right side
    154,464,374.40x = 18,918,724,163,613,280
  5. Step 5: Solve for x
    x = 18,918,724,163,613,280/154,464,374.40
  6. Step 6: Final answer
    x = 122,479,531.20

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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.