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Finding the Fourth Proportional to 118,187.51, 163,112.33 and 65,804.81

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Solution

The fourth proportional to 118,187.51, 163,112.33 and 65,804.81 is: 90,818.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,187.51 : 163,112.33 = 65,804.81 : x
  2. Step 2: Convert to fraction form
    118,187.51/163,112.33 = 65,804.81/x
  3. Step 3: Cross multiply
    118,187.51x = 163,112.33 × 65,804.81
  4. Step 4: Simplify right side
    118,187.51x = 10,733,575,233.26
  5. Step 5: Solve for x
    x = 10,733,575,233.26/118,187.51
  6. Step 6: Final answer
    x = 90,818.19

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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.