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Finding the Fourth Proportional to 170,459.31, 255,699.05 and 52,138.83

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Solution

The fourth proportional to 170,459.31, 255,699.05 and 52,138.83 is: 78,211.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,459.31 : 255,699.05 = 52,138.83 : x
  2. Step 2: Convert to fraction form
    170,459.31/255,699.05 = 52,138.83/x
  3. Step 3: Cross multiply
    170,459.31x = 255,699.05 × 52,138.83
  4. Step 4: Simplify right side
    170,459.31x = 13,331,849,038.42
  5. Step 5: Solve for x
    x = 13,331,849,038.42/170,459.31
  6. Step 6: Final answer
    x = 78,211.33

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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.