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Finding the Fourth Proportional to 139,172.88, 192,059.10 and 75,510.84

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Solution

The fourth proportional to 139,172.88, 192,059.10 and 75,510.84 is: 104,205.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,172.88 : 192,059.10 = 75,510.84 : x
  2. Step 2: Convert to fraction form
    139,172.88/192,059.10 = 75,510.84/x
  3. Step 3: Cross multiply
    139,172.88x = 192,059.10 × 75,510.84
  4. Step 4: Simplify right side
    139,172.88x = 14,502,543,970.64
  5. Step 5: Solve for x
    x = 14,502,543,970.64/139,172.88
  6. Step 6: Final answer
    x = 104,205.24

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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.