Home / 137,280,290.98-189,450,501.13-80,768,981.62

Finding the Fourth Proportional to 137,280,290.98, 189,450,501.13 and 80,768,981.62

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Solution

The fourth proportional to 137,280,290.98, 189,450,501.13 and 80,768,981.62 is: 111,463,371.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,280,290.98 : 189,450,501.13 = 80,768,981.62 : x
  2. Step 2: Convert to fraction form
    137,280,290.98/189,450,501.13 = 80,768,981.62/x
  3. Step 3: Cross multiply
    137,280,290.98x = 189,450,501.13 × 80,768,981.62
  4. Step 4: Simplify right side
    137,280,290.98x = 15,301,724,043,668,760
  5. Step 5: Solve for x
    x = 15,301,724,043,668,760/137,280,290.98
  6. Step 6: Final answer
    x = 111,463,371.29

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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.