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Finding the Fourth Proportional to 118,668.95, 163,763.34 and 64,957.37

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Solution

The fourth proportional to 118,668.95, 163,763.34 and 64,957.37 is: 89,641.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,668.95 : 163,763.34 = 64,957.37 : x
  2. Step 2: Convert to fraction form
    118,668.95/163,763.34 = 64,957.37/x
  3. Step 3: Cross multiply
    118,668.95x = 163,763.34 × 64,957.37
  4. Step 4: Simplify right side
    118,668.95x = 10,637,636,278.22
  5. Step 5: Solve for x
    x = 10,637,636,278.22/118,668.95
  6. Step 6: Final answer
    x = 89,641.28

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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.