Home / 149,050.86-205,688.12-81,066.36

Finding the Fourth Proportional to 149,050.86, 205,688.12 and 81,066.36

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Solution

The fourth proportional to 149,050.86, 205,688.12 and 81,066.36 is: 111,870.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,050.86 : 205,688.12 = 81,066.36 : x
  2. Step 2: Convert to fraction form
    149,050.86/205,688.12 = 81,066.36/x
  3. Step 3: Cross multiply
    149,050.86x = 205,688.12 × 81,066.36
  4. Step 4: Simplify right side
    149,050.86x = 16,674,387,183.64
  5. Step 5: Solve for x
    x = 16,674,387,183.64/149,050.86
  6. Step 6: Final answer
    x = 111,870.45

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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.