Home / 154,172.48-212,730.24-86,190.80

Finding the Fourth Proportional to 154,172.48, 212,730.24 and 86,190.80

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Solution

The fourth proportional to 154,172.48, 212,730.24 and 86,190.80 is: 118,927.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,172.48 : 212,730.24 = 86,190.80 : x
  2. Step 2: Convert to fraction form
    154,172.48/212,730.24 = 86,190.80/x
  3. Step 3: Cross multiply
    154,172.48x = 212,730.24 × 86,190.80
  4. Step 4: Simplify right side
    154,172.48x = 18,335,389,569.79
  5. Step 5: Solve for x
    x = 18,335,389,569.79/154,172.48
  6. Step 6: Final answer
    x = 118,927.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.