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Finding the Fourth Proportional to 171,946.90, 257,920.35 and 118,802.80

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Solution

The fourth proportional to 171,946.90, 257,920.35 and 118,802.80 is: 178,204.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,946.90 : 257,920.35 = 118,802.80 : x
  2. Step 2: Convert to fraction form
    171,946.90/257,920.35 = 118,802.80/x
  3. Step 3: Cross multiply
    171,946.90x = 257,920.35 × 118,802.80
  4. Step 4: Simplify right side
    171,946.90x = 30,641,659,756.98
  5. Step 5: Solve for x
    x = 30,641,659,756.98/171,946.90
  6. Step 6: Final answer
    x = 178,204.20

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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.