Home / 128,282.30-192,341.94-112,518.98

Finding the Fourth Proportional to 128,282.30, 192,341.94 and 112,518.98

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Solution

The fourth proportional to 128,282.30, 192,341.94 and 112,518.98 is: 168,706.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,282.30 : 192,341.94 = 112,518.98 : x
  2. Step 2: Convert to fraction form
    128,282.30/192,341.94 = 112,518.98/x
  3. Step 3: Cross multiply
    128,282.30x = 192,341.94 × 112,518.98
  4. Step 4: Simplify right side
    128,282.30x = 21,642,118,900.02
  5. Step 5: Solve for x
    x = 21,642,118,900.02/128,282.30
  6. Step 6: Final answer
    x = 168,706.98

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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.