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Finding the Fourth Proportional to 163,579,328.80, 245,568,058.80 and 82,758,695.20

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Solution

The fourth proportional to 163,579,328.80, 245,568,058.80 and 82,758,695.20 is: 124,238,754.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,579,328.80 : 245,568,058.80 = 82,758,695.20 : x
  2. Step 2: Convert to fraction form
    163,579,328.80/245,568,058.80 = 82,758,695.20/x
  3. Step 3: Cross multiply
    163,579,328.80x = 245,568,058.80 × 82,758,695.20
  4. Step 4: Simplify right side
    163,579,328.80x = 20,322,892,129,084,880
  5. Step 5: Solve for x
    x = 20,322,892,129,084,880/163,579,328.80
  6. Step 6: Final answer
    x = 124,238,754.85

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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.