Home / 191,155.04-263,800.68-105,120.56

Finding the Fourth Proportional to 191,155.04, 263,800.68 and 105,120.56

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Solution

The fourth proportional to 191,155.04, 263,800.68 and 105,120.56 is: 145,070.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,155.04 : 263,800.68 = 105,120.56 : x
  2. Step 2: Convert to fraction form
    191,155.04/263,800.68 = 105,120.56/x
  3. Step 3: Cross multiply
    191,155.04x = 263,800.68 × 105,120.56
  4. Step 4: Simplify right side
    191,155.04x = 27,730,875,209.98
  5. Step 5: Solve for x
    x = 27,730,875,209.98/191,155.04
  6. Step 6: Final answer
    x = 145,070.07

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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.