Home / 154,155.06-212,729.49-86,172.17

Finding the Fourth Proportional to 154,155.06, 212,729.49 and 86,172.17

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Solution

The fourth proportional to 154,155.06, 212,729.49 and 86,172.17 is: 118,915.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,155.06 : 212,729.49 = 86,172.17 : x
  2. Step 2: Convert to fraction form
    154,155.06/212,729.49 = 86,172.17/x
  3. Step 3: Cross multiply
    154,155.06x = 212,729.49 × 86,172.17
  4. Step 4: Simplify right side
    154,155.06x = 18,331,360,712.65
  5. Step 5: Solve for x
    x = 18,331,360,712.65/154,155.06
  6. Step 6: Final answer
    x = 118,915.08

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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.