Home / 149,206.22-205,904.58-81,223.68

Finding the Fourth Proportional to 149,206.22, 205,904.58 and 81,223.68

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Solution

The fourth proportional to 149,206.22, 205,904.58 and 81,223.68 is: 112,088.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,206.22 : 205,904.58 = 81,223.68 : x
  2. Step 2: Convert to fraction form
    149,206.22/205,904.58 = 81,223.68/x
  3. Step 3: Cross multiply
    149,206.22x = 205,904.58 × 81,223.68
  4. Step 4: Simplify right side
    149,206.22x = 16,724,328,444.51
  5. Step 5: Solve for x
    x = 16,724,328,444.51/149,206.22
  6. Step 6: Final answer
    x = 112,088.68

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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.