Home / 186,340.75-257,149.15-105,783.55

Finding the Fourth Proportional to 186,340.75, 257,149.15 and 105,783.55

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Solution

The fourth proportional to 186,340.75, 257,149.15 and 105,783.55 is: 145,980.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,340.75 : 257,149.15 = 105,783.55 : x
  2. Step 2: Convert to fraction form
    186,340.75/257,149.15 = 105,783.55/x
  3. Step 3: Cross multiply
    186,340.75x = 257,149.15 × 105,783.55
  4. Step 4: Simplify right side
    186,340.75x = 27,202,149,966.48
  5. Step 5: Solve for x
    x = 27,202,149,966.48/186,340.75
  6. Step 6: Final answer
    x = 145,980.68

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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.