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Finding the Fourth Proportional to 99,354.70, 148,706.25 and 54,307.05

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Solution

The fourth proportional to 99,354.70, 148,706.25 and 54,307.05 is: 81,282.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,354.70 : 148,706.25 = 54,307.05 : x
  2. Step 2: Convert to fraction form
    99,354.70/148,706.25 = 54,307.05/x
  3. Step 3: Cross multiply
    99,354.70x = 148,706.25 × 54,307.05
  4. Step 4: Simplify right side
    99,354.70x = 8,075,797,754.06
  5. Step 5: Solve for x
    x = 8,075,797,754.06/99,354.70
  6. Step 6: Final answer
    x = 81,282.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.