Home / 113,451.36-170,023.68-81,915.36

Finding the Fourth Proportional to 113,451.36, 170,023.68 and 81,915.36

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Solution

The fourth proportional to 113,451.36, 170,023.68 and 81,915.36 is: 122,762.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,451.36 : 170,023.68 = 81,915.36 : x
  2. Step 2: Convert to fraction form
    113,451.36/170,023.68 = 81,915.36/x
  3. Step 3: Cross multiply
    113,451.36x = 170,023.68 × 81,915.36
  4. Step 4: Simplify right side
    113,451.36x = 13,927,550,955.72
  5. Step 5: Solve for x
    x = 13,927,550,955.72/113,451.36
  6. Step 6: Final answer
    x = 122,762.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.