Home / 113,531.36-156,673.20-65,812.40

Finding the Fourth Proportional to 113,531.36, 156,673.20 and 65,812.40

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Solution

The fourth proportional to 113,531.36, 156,673.20 and 65,812.40 is: 90,821.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,531.36 : 156,673.20 = 65,812.40 : x
  2. Step 2: Convert to fraction form
    113,531.36/156,673.20 = 65,812.40/x
  3. Step 3: Cross multiply
    113,531.36x = 156,673.20 × 65,812.40
  4. Step 4: Simplify right side
    113,531.36x = 10,311,039,307.68
  5. Step 5: Solve for x
    x = 10,311,039,307.68/113,531.36
  6. Step 6: Final answer
    x = 90,821.07

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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.