Home / 129,557.54-178,794.95-72,196.94

Finding the Fourth Proportional to 129,557.54, 178,794.95 and 72,196.94

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Solution

The fourth proportional to 129,557.54, 178,794.95 and 72,196.94 is: 99,634.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,557.54 : 178,794.95 = 72,196.94 : x
  2. Step 2: Convert to fraction form
    129,557.54/178,794.95 = 72,196.94/x
  3. Step 3: Cross multiply
    129,557.54x = 178,794.95 × 72,196.94
  4. Step 4: Simplify right side
    129,557.54x = 12,908,448,363.46
  5. Step 5: Solve for x
    x = 12,908,448,363.46/129,557.54
  6. Step 6: Final answer
    x = 99,634.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.