Home / 128,078.10-192,117.06-34,583.76

Finding the Fourth Proportional to 128,078.10, 192,117.06 and 34,583.76

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Solution

The fourth proportional to 128,078.10, 192,117.06 and 34,583.76 is: 51,875.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,078.10 : 192,117.06 = 34,583.76 : x
  2. Step 2: Convert to fraction form
    128,078.10/192,117.06 = 34,583.76/x
  3. Step 3: Cross multiply
    128,078.10x = 192,117.06 × 34,583.76
  4. Step 4: Simplify right side
    128,078.10x = 6,644,130,294.95
  5. Step 5: Solve for x
    x = 6,644,130,294.95/128,078.10
  6. Step 6: Final answer
    x = 51,875.62

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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.