Home / 190,011.61-262,219.85-105,130.09

Finding the Fourth Proportional to 190,011.61, 262,219.85 and 105,130.09

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Solution

The fourth proportional to 190,011.61, 262,219.85 and 105,130.09 is: 145,081.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,011.61 : 262,219.85 = 105,130.09 : x
  2. Step 2: Convert to fraction form
    190,011.61/262,219.85 = 105,130.09/x
  3. Step 3: Cross multiply
    190,011.61x = 262,219.85 × 105,130.09
  4. Step 4: Simplify right side
    190,011.61x = 27,567,196,430.29
  5. Step 5: Solve for x
    x = 27,567,196,430.29/190,011.61
  6. Step 6: Final answer
    x = 145,081.64

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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.