Home / 128,068.43-192,099.95-42,685.47

Finding the Fourth Proportional to 128,068.43, 192,099.95 and 42,685.47

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Solution

The fourth proportional to 128,068.43, 192,099.95 and 42,685.47 is: 64,027.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,068.43 : 192,099.95 = 42,685.47 : x
  2. Step 2: Convert to fraction form
    128,068.43/192,099.95 = 42,685.47/x
  3. Step 3: Cross multiply
    128,068.43x = 192,099.95 × 42,685.47
  4. Step 4: Simplify right side
    128,068.43x = 8,199,875,478.80
  5. Step 5: Solve for x
    x = 8,199,875,478.80/128,068.43
  6. Step 6: Final answer
    x = 64,027.30

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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.