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Finding the Fourth Proportional to 128,089.95, 192,163.47 and 39,352.42

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Solution

The fourth proportional to 128,089.95, 192,163.47 and 39,352.42 is: 59,037.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,089.95 : 192,163.47 = 39,352.42 : x
  2. Step 2: Convert to fraction form
    128,089.95/192,163.47 = 39,352.42/x
  3. Step 3: Cross multiply
    128,089.95x = 192,163.47 × 39,352.42
  4. Step 4: Simplify right side
    128,089.95x = 7,562,097,580.10
  5. Step 5: Solve for x
    x = 7,562,097,580.10/128,089.95
  6. Step 6: Final answer
    x = 59,037.40

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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.