Home / 121,788,712.80-182,683,069.20-30,912,301.80

Finding the Fourth Proportional to 121,788,712.80, 182,683,069.20 and 30,912,301.80

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Solution

The fourth proportional to 121,788,712.80, 182,683,069.20 and 30,912,301.80 is: 46,368,452.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,788,712.80 : 182,683,069.20 = 30,912,301.80 : x
  2. Step 2: Convert to fraction form
    121,788,712.80/182,683,069.20 = 30,912,301.80/x
  3. Step 3: Cross multiply
    121,788,712.80x = 182,683,069.20 × 30,912,301.80
  4. Step 4: Simplify right side
    121,788,712.80x = 5,647,154,168,860,684
  5. Step 5: Solve for x
    x = 5,647,154,168,860,684/121,788,712.80
  6. Step 6: Final answer
    x = 46,368,452.70

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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.