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Finding the Fourth Proportional to 170,021.70, 255,024.45 and 57,690.90

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Solution

The fourth proportional to 170,021.70, 255,024.45 and 57,690.90 is: 86,533.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,021.70 : 255,024.45 = 57,690.90 : x
  2. Step 2: Convert to fraction form
    170,021.70/255,024.45 = 57,690.90/x
  3. Step 3: Cross multiply
    170,021.70x = 255,024.45 × 57,690.90
  4. Step 4: Simplify right side
    170,021.70x = 14,712,590,042.51
  5. Step 5: Solve for x
    x = 14,712,590,042.51/170,021.70
  6. Step 6: Final answer
    x = 86,533.60

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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.