Home / 147,801.15-221,775.89-68,921.55

Finding the Fourth Proportional to 147,801.15, 221,775.89 and 68,921.55

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Solution

The fourth proportional to 147,801.15, 221,775.89 and 68,921.55 is: 103,416.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,801.15 : 221,775.89 = 68,921.55 : x
  2. Step 2: Convert to fraction form
    147,801.15/221,775.89 = 68,921.55/x
  3. Step 3: Cross multiply
    147,801.15x = 221,775.89 × 68,921.55
  4. Step 4: Simplify right side
    147,801.15x = 15,285,137,746.82
  5. Step 5: Solve for x
    x = 15,285,137,746.82/147,801.15
  6. Step 6: Final answer
    x = 103,416.91

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1.5x scale

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.