Home / 154,986,640.10-213,881,575.02-85,372,020.98

Finding the Fourth Proportional to 154,986,640.10, 213,881,575.02 and 85,372,020.98

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Solution

The fourth proportional to 154,986,640.10, 213,881,575.02 and 85,372,020.98 is: 117,813,395.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,986,640.10 : 213,881,575.02 = 85,372,020.98 : x
  2. Step 2: Convert to fraction form
    154,986,640.10/213,881,575.02 = 85,372,020.98/x
  3. Step 3: Cross multiply
    154,986,640.10x = 213,881,575.02 × 85,372,020.98
  4. Step 4: Simplify right side
    154,986,640.10x = 18,259,502,309,842,884
  5. Step 5: Solve for x
    x = 18,259,502,309,842,884/154,986,640.10
  6. Step 6: Final answer
    x = 117,813,395.39

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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.