Home / 137,280,289.48-189,450,499.06-80,768,980.12

Finding the Fourth Proportional to 137,280,289.48, 189,450,499.06 and 80,768,980.12

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Solution

The fourth proportional to 137,280,289.48, 189,450,499.06 and 80,768,980.12 is: 111,463,369.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,280,289.48 : 189,450,499.06 = 80,768,980.12 : x
  2. Step 2: Convert to fraction form
    137,280,289.48/189,450,499.06 = 80,768,980.12/x
  3. Step 3: Cross multiply
    137,280,289.48x = 189,450,499.06 × 80,768,980.12
  4. Step 4: Simplify right side
    137,280,289.48x = 15,301,723,592,301,220
  5. Step 5: Solve for x
    x = 15,301,723,592,301,220/137,280,289.48
  6. Step 6: Final answer
    x = 111,463,369.22

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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.