Home / 147,658.10-221,487.15-68,780.30

Finding the Fourth Proportional to 147,658.10, 221,487.15 and 68,780.30

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Solution

The fourth proportional to 147,658.10, 221,487.15 and 68,780.30 is: 103,170.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,658.10 : 221,487.15 = 68,780.30 : x
  2. Step 2: Convert to fraction form
    147,658.10/221,487.15 = 68,780.30/x
  3. Step 3: Cross multiply
    147,658.10x = 221,487.15 × 68,780.30
  4. Step 4: Simplify right side
    147,658.10x = 15,233,952,623.15
  5. Step 5: Solve for x
    x = 15,233,952,623.15/147,658.10
  6. Step 6: Final answer
    x = 103,170.45

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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.