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Finding the Fourth Proportional to 145,862.73, 201,290.55 and 78,794.73

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Solution

The fourth proportional to 145,862.73, 201,290.55 and 78,794.73 is: 108,736.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,862.73 : 201,290.55 = 78,794.73 : x
  2. Step 2: Convert to fraction form
    145,862.73/201,290.55 = 78,794.73/x
  3. Step 3: Cross multiply
    145,862.73x = 201,290.55 × 78,794.73
  4. Step 4: Simplify right side
    145,862.73x = 15,860,634,538.80
  5. Step 5: Solve for x
    x = 15,860,634,538.80/145,862.73
  6. Step 6: Final answer
    x = 108,736.72

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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.