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Finding the Fourth Proportional to 98,070.02, 134,911.94 and 85,915.77

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Solution

The fourth proportional to 98,070.02, 134,911.94 and 85,915.77 is: 118,191.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,070.02 : 134,911.94 = 85,915.77 : x
  2. Step 2: Convert to fraction form
    98,070.02/134,911.94 = 85,915.77/x
  3. Step 3: Cross multiply
    98,070.02x = 134,911.94 × 85,915.77
  4. Step 4: Simplify right side
    98,070.02x = 11,591,063,207.29
  5. Step 5: Solve for x
    x = 11,591,063,207.29/98,070.02
  6. Step 6: Final answer
    x = 118,191.71

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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.