Home / 154,929,863.22-213,798,538.44-85,315,619.22

Finding the Fourth Proportional to 154,929,863.22, 213,798,538.44 and 85,315,619.22

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Solution

The fourth proportional to 154,929,863.22, 213,798,538.44 and 85,315,619.22 is: 117,732,981.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,929,863.22 : 213,798,538.44 = 85,315,619.22 : x
  2. Step 2: Convert to fraction form
    154,929,863.22/213,798,538.44 = 85,315,619.22/x
  3. Step 3: Cross multiply
    154,929,863.22x = 213,798,538.44 × 85,315,619.22
  4. Step 4: Simplify right side
    154,929,863.22x = 18,240,354,695,339,572
  5. Step 5: Solve for x
    x = 18,240,354,695,339,572/154,929,863.22
  6. Step 6: Final answer
    x = 117,732,981.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.