Home / 113,311,651.60-169,967,477.40-78,874,274.80

Finding the Fourth Proportional to 113,311,651.60, 169,967,477.40 and 78,874,274.80

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Solution

The fourth proportional to 113,311,651.60, 169,967,477.40 and 78,874,274.80 is: 118,311,412.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,311,651.60 : 169,967,477.40 = 78,874,274.80 : x
  2. Step 2: Convert to fraction form
    113,311,651.60/169,967,477.40 = 78,874,274.80/x
  3. Step 3: Cross multiply
    113,311,651.60x = 169,967,477.40 × 78,874,274.80
  4. Step 4: Simplify right side
    113,311,651.60x = 13,406,061,519,510,390
  5. Step 5: Solve for x
    x = 13,406,061,519,510,390/113,311,651.60
  6. Step 6: Final answer
    x = 118,311,412.20

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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.