Home / 128,056.50-191,985.27-82,982.64

Finding the Fourth Proportional to 128,056.50, 191,985.27 and 82,982.64

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Solution

The fourth proportional to 128,056.50, 191,985.27 and 82,982.64 is: 124,409.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,056.50 : 191,985.27 = 82,982.64 : x
  2. Step 2: Convert to fraction form
    128,056.50/191,985.27 = 82,982.64/x
  3. Step 3: Cross multiply
    128,056.50x = 191,985.27 × 82,982.64
  4. Step 4: Simplify right side
    128,056.50x = 15,931,444,545.71
  5. Step 5: Solve for x
    x = 15,931,444,545.71/128,056.50
  6. Step 6: Final answer
    x = 124,409.50

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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.