Home / 120,513,112.14-166,154,131.19-78,051,646.92

Finding the Fourth Proportional to 120,513,112.14, 166,154,131.19 and 78,051,646.92

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Solution

The fourth proportional to 120,513,112.14, 166,154,131.19 and 78,051,646.92 is: 107,611,556.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,513,112.14 : 166,154,131.19 = 78,051,646.92 : x
  2. Step 2: Convert to fraction form
    120,513,112.14/166,154,131.19 = 78,051,646.92/x
  3. Step 3: Cross multiply
    120,513,112.14x = 166,154,131.19 × 78,051,646.92
  4. Step 4: Simplify right side
    120,513,112.14x = 12,968,603,582,136,368
  5. Step 5: Solve for x
    x = 12,968,603,582,136,368/120,513,112.14
  6. Step 6: Final answer
    x = 107,611,556.55

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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.