Home / 103,426,245.70-155,139,368.55-72,815,244.10

Finding the Fourth Proportional to 103,426,245.70, 155,139,368.55 and 72,815,244.10

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Solution

The fourth proportional to 103,426,245.70, 155,139,368.55 and 72,815,244.10 is: 109,222,866.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,426,245.70 : 155,139,368.55 = 72,815,244.10 : x
  2. Step 2: Convert to fraction form
    103,426,245.70/155,139,368.55 = 72,815,244.10/x
  3. Step 3: Cross multiply
    103,426,245.70x = 155,139,368.55 × 72,815,244.10
  4. Step 4: Simplify right side
    103,426,245.70x = 11,296,510,990,488,112
  5. Step 5: Solve for x
    x = 11,296,510,990,488,112/103,426,245.70
  6. Step 6: Final answer
    x = 109,222,866.15

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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.