Home / 147,830.30-221,490.30-68,782.40

Finding the Fourth Proportional to 147,830.30, 221,490.30 and 68,782.40

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Solution

The fourth proportional to 147,830.30, 221,490.30 and 68,782.40 is: 103,054.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,830.30 : 221,490.30 = 68,782.40 : x
  2. Step 2: Convert to fraction form
    147,830.30/221,490.30 = 68,782.40/x
  3. Step 3: Cross multiply
    147,830.30x = 221,490.30 × 68,782.40
  4. Step 4: Simplify right side
    147,830.30x = 15,234,634,410.72
  5. Step 5: Solve for x
    x = 15,234,634,410.72/147,830.30
  6. Step 6: Final answer
    x = 103,054.88

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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.