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Finding the Fourth Proportional to 170,025.80, 255,135.90 and 64,920.20

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Solution

The fourth proportional to 170,025.80, 255,135.90 and 64,920.20 is: 97,417.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,025.80 : 255,135.90 = 64,920.20 : x
  2. Step 2: Convert to fraction form
    170,025.80/255,135.90 = 64,920.20/x
  3. Step 3: Cross multiply
    170,025.80x = 255,135.90 × 64,920.20
  4. Step 4: Simplify right side
    170,025.80x = 16,563,473,655.18
  5. Step 5: Solve for x
    x = 16,563,473,655.18/170,025.80
  6. Step 6: Final answer
    x = 97,417.41

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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.