Home / 113,420.61-156,258.41-81,534.33

Finding the Fourth Proportional to 113,420.61, 156,258.41 and 81,534.33

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Solution

The fourth proportional to 113,420.61, 156,258.41 and 81,534.33 is: 112,329.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,420.61 : 156,258.41 = 81,534.33 : x
  2. Step 2: Convert to fraction form
    113,420.61/156,258.41 = 81,534.33/x
  3. Step 3: Cross multiply
    113,420.61x = 156,258.41 × 81,534.33
  4. Step 4: Simplify right side
    113,420.61x = 12,740,424,358.54
  5. Step 5: Solve for x
    x = 12,740,424,358.54/113,420.61
  6. Step 6: Final answer
    x = 112,329.01

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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.