Home / 117,130.06-161,636.49-65,447.56

Finding the Fourth Proportional to 117,130.06, 161,636.49 and 65,447.56

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Solution

The fourth proportional to 117,130.06, 161,636.49 and 65,447.56 is: 90,315.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,130.06 : 161,636.49 = 65,447.56 : x
  2. Step 2: Convert to fraction form
    117,130.06/161,636.49 = 65,447.56/x
  3. Step 3: Cross multiply
    117,130.06x = 161,636.49 × 65,447.56
  4. Step 4: Simplify right side
    117,130.06x = 10,578,713,877.46
  5. Step 5: Solve for x
    x = 10,578,713,877.46/117,130.06
  6. Step 6: Final answer
    x = 90,315.96

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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.