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Finding the Fourth Proportional to 154,370.70, 213,073.47 and 90,728.94

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Solution

The fourth proportional to 154,370.70, 213,073.47 and 90,728.94 is: 125,230.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,370.70 : 213,073.47 = 90,728.94 : x
  2. Step 2: Convert to fraction form
    154,370.70/213,073.47 = 90,728.94/x
  3. Step 3: Cross multiply
    154,370.70x = 213,073.47 × 90,728.94
  4. Step 4: Simplify right side
    154,370.70x = 19,331,930,075.22
  5. Step 5: Solve for x
    x = 19,331,930,075.22/154,370.70
  6. Step 6: Final answer
    x = 125,230.57

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1.5x scale

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.