Home / 118,698.54-163,915.02-76,330.68

Finding the Fourth Proportional to 118,698.54, 163,915.02 and 76,330.68

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Solution

The fourth proportional to 118,698.54, 163,915.02 and 76,330.68 is: 105,407.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,698.54 : 163,915.02 = 76,330.68 : x
  2. Step 2: Convert to fraction form
    118,698.54/163,915.02 = 76,330.68/x
  3. Step 3: Cross multiply
    118,698.54x = 163,915.02 × 76,330.68
  4. Step 4: Simplify right side
    118,698.54x = 12,511,744,938.81
  5. Step 5: Solve for x
    x = 12,511,744,938.81/118,698.54
  6. Step 6: Final answer
    x = 105,407.74

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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.