Home / 128,339.17-191,568.75-113,188.93

Finding the Fourth Proportional to 128,339.17, 191,568.75 and 113,188.93

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Solution

The fourth proportional to 128,339.17, 191,568.75 and 113,188.93 is: 168,954.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,339.17 : 191,568.75 = 113,188.93 : x
  2. Step 2: Convert to fraction form
    128,339.17/191,568.75 = 113,188.93/x
  3. Step 3: Cross multiply
    128,339.17x = 191,568.75 × 113,188.93
  4. Step 4: Simplify right side
    128,339.17x = 21,683,460,310.15
  5. Step 5: Solve for x
    x = 21,683,460,310.15/128,339.17
  6. Step 6: Final answer
    x = 168,954.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.