Home / 128,240.42-192,300.08-74,947.68

Finding the Fourth Proportional to 128,240.42, 192,300.08 and 74,947.68

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Solution

The fourth proportional to 128,240.42, 192,300.08 and 74,947.68 is: 112,386.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,240.42 : 192,300.08 = 74,947.68 : x
  2. Step 2: Convert to fraction form
    128,240.42/192,300.08 = 74,947.68/x
  3. Step 3: Cross multiply
    128,240.42x = 192,300.08 × 74,947.68
  4. Step 4: Simplify right side
    128,240.42x = 14,412,444,485.08
  5. Step 5: Solve for x
    x = 14,412,444,485.08/128,240.42
  6. Step 6: Final answer
    x = 112,386.13

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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.