Home / 154,756,320.95-213,563,715.70-85,140,207.16

Finding the Fourth Proportional to 154,756,320.95, 213,563,715.70 and 85,140,207.16

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Solution

The fourth proportional to 154,756,320.95, 213,563,715.70 and 85,140,207.16 is: 117,493,481.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,756,320.95 : 213,563,715.70 = 85,140,207.16 : x
  2. Step 2: Convert to fraction form
    154,756,320.95/213,563,715.70 = 85,140,207.16/x
  3. Step 3: Cross multiply
    154,756,320.95x = 213,563,715.70 × 85,140,207.16
  4. Step 4: Simplify right side
    154,756,320.95x = 18,182,858,996,557,344
  5. Step 5: Solve for x
    x = 18,182,858,996,557,344/154,756,320.95
  6. Step 6: Final answer
    x = 117,493,481.91

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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.