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Finding the Fourth Proportional to 108,521.70, 162,782.55 and 64,125.60

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Solution

The fourth proportional to 108,521.70, 162,782.55 and 64,125.60 is: 96,188.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,521.70 : 162,782.55 = 64,125.60 : x
  2. Step 2: Convert to fraction form
    108,521.70/162,782.55 = 64,125.60/x
  3. Step 3: Cross multiply
    108,521.70x = 162,782.55 × 64,125.60
  4. Step 4: Simplify right side
    108,521.70x = 10,438,528,688.28
  5. Step 5: Solve for x
    x = 10,438,528,688.28/108,521.70
  6. Step 6: Final answer
    x = 96,188.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.