Home / 147,940.16-221,904.48-81,512

Finding the Fourth Proportional to 147,940.16, 221,904.48 and 81,512

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Solution

The fourth proportional to 147,940.16, 221,904.48 and 81,512 is: 122,264.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,940.16 : 221,904.48 = 81,512 : x
  2. Step 2: Convert to fraction form
    147,940.16/221,904.48 = 81,512/x
  3. Step 3: Cross multiply
    147,940.16x = 221,904.48 × 81,512
  4. Step 4: Simplify right side
    147,940.16x = 18,087,877,973.76
  5. Step 5: Solve for x
    x = 18,087,877,973.76/147,940.16
  6. Step 6: Final answer
    x = 122,264.83

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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.