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Finding the Fourth Proportional to 118,283.58, 163,231.80 and 64,569.78

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Solution

The fourth proportional to 118,283.58, 163,231.80 and 64,569.78 is: 89,106.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,283.58 : 163,231.80 = 64,569.78 : x
  2. Step 2: Convert to fraction form
    118,283.58/163,231.80 = 64,569.78/x
  3. Step 3: Cross multiply
    118,283.58x = 163,231.80 × 64,569.78
  4. Step 4: Simplify right side
    118,283.58x = 10,539,841,415.00
  5. Step 5: Solve for x
    x = 10,539,841,415.00/118,283.58
  6. Step 6: Final answer
    x = 89,106.55

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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.