Home / 117,478.07-162,081.15-66,485.74

Finding the Fourth Proportional to 117,478.07, 162,081.15 and 66,485.74

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Solution

The fourth proportional to 117,478.07, 162,081.15 and 66,485.74 is: 91,728.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,478.07 : 162,081.15 = 66,485.74 : x
  2. Step 2: Convert to fraction form
    117,478.07/162,081.15 = 66,485.74/x
  3. Step 3: Cross multiply
    117,478.07x = 162,081.15 × 66,485.74
  4. Step 4: Simplify right side
    117,478.07x = 10,776,084,792.60
  5. Step 5: Solve for x
    x = 10,776,084,792.60/117,478.07
  6. Step 6: Final answer
    x = 91,728.48

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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.