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Finding the Fourth Proportional to 118,674.51, 163,774.98 and 64,959.56

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Solution

The fourth proportional to 118,674.51, 163,774.98 and 64,959.56 is: 89,646.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,674.51 : 163,774.98 = 64,959.56 : x
  2. Step 2: Convert to fraction form
    118,674.51/163,774.98 = 64,959.56/x
  3. Step 3: Cross multiply
    118,674.51x = 163,774.98 × 64,959.56
  4. Step 4: Simplify right side
    118,674.51x = 10,638,750,639.81
  5. Step 5: Solve for x
    x = 10,638,750,639.81/118,674.51
  6. Step 6: Final answer
    x = 89,646.47

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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.