Home / 154,756,328.78-213,563,726.54-85,140,214.98

Finding the Fourth Proportional to 154,756,328.78, 213,563,726.54 and 85,140,214.98

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Solution

The fourth proportional to 154,756,328.78, 213,563,726.54 and 85,140,214.98 is: 117,493,492.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,756,328.78 : 213,563,726.54 = 85,140,214.98 : x
  2. Step 2: Convert to fraction form
    154,756,328.78/213,563,726.54 = 85,140,214.98/x
  3. Step 3: Cross multiply
    154,756,328.78x = 213,563,726.54 × 85,140,214.98
  4. Step 4: Simplify right side
    154,756,328.78x = 18,182,861,589,119,832
  5. Step 5: Solve for x
    x = 18,182,861,589,119,832/154,756,328.78
  6. Step 6: Final answer
    x = 117,493,492.73

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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.