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Finding the Fourth Proportional to 154,202.50, 212,710.71 and 90,527.98

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Solution

The fourth proportional to 154,202.50, 212,710.71 and 90,527.98 is: 124,876.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,202.50 : 212,710.71 = 90,527.98 : x
  2. Step 2: Convert to fraction form
    154,202.50/212,710.71 = 90,527.98/x
  3. Step 3: Cross multiply
    154,202.50x = 212,710.71 × 90,527.98
  4. Step 4: Simplify right side
    154,202.50x = 19,256,270,900.67
  5. Step 5: Solve for x
    x = 19,256,270,900.67/154,202.50
  6. Step 6: Final answer
    x = 124,876.52

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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.