Home / 128,526.90-192,790.35-83,426.10

Finding the Fourth Proportional to 128,526.90, 192,790.35 and 83,426.10

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Solution

The fourth proportional to 128,526.90, 192,790.35 and 83,426.10 is: 125,139.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,526.90 : 192,790.35 = 83,426.10 : x
  2. Step 2: Convert to fraction form
    128,526.90/192,790.35 = 83,426.10/x
  3. Step 3: Cross multiply
    128,526.90x = 192,790.35 × 83,426.10
  4. Step 4: Simplify right side
    128,526.90x = 16,083,747,018.14
  5. Step 5: Solve for x
    x = 16,083,747,018.14/128,526.90
  6. Step 6: Final answer
    x = 125,139.15

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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.