Home / 158,711.40-219,021.43-86,114.27

Finding the Fourth Proportional to 158,711.40, 219,021.43 and 86,114.27

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Solution

The fourth proportional to 158,711.40, 219,021.43 and 86,114.27 is: 118,837.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,711.40 : 219,021.43 = 86,114.27 : x
  2. Step 2: Convert to fraction form
    158,711.40/219,021.43 = 86,114.27/x
  3. Step 3: Cross multiply
    158,711.40x = 219,021.43 × 86,114.27
  4. Step 4: Simplify right side
    158,711.40x = 18,860,870,558.81
  5. Step 5: Solve for x
    x = 18,860,870,558.81/158,711.40
  6. Step 6: Final answer
    x = 118,837.53

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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.