Home / 186,780.21-257,683.32-115,035.72

Finding the Fourth Proportional to 186,780.21, 257,683.32 and 115,035.72

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Solution

The fourth proportional to 186,780.21, 257,683.32 and 115,035.72 is: 158,704.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,780.21 : 257,683.32 = 115,035.72 : x
  2. Step 2: Convert to fraction form
    186,780.21/257,683.32 = 115,035.72/x
  3. Step 3: Cross multiply
    186,780.21x = 257,683.32 × 115,035.72
  4. Step 4: Simplify right side
    186,780.21x = 29,642,786,248.19
  5. Step 5: Solve for x
    x = 29,642,786,248.19/186,780.21
  6. Step 6: Final answer
    x = 158,704.11

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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.