Home / 154,360.09-212,812.72-111,303.55

Finding the Fourth Proportional to 154,360.09, 212,812.72 and 111,303.55

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Solution

The fourth proportional to 154,360.09, 212,812.72 and 111,303.55 is: 153,451.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,360.09 : 212,812.72 = 111,303.55 : x
  2. Step 2: Convert to fraction form
    154,360.09/212,812.72 = 111,303.55/x
  3. Step 3: Cross multiply
    154,360.09x = 212,812.72 × 111,303.55
  4. Step 4: Simplify right side
    154,360.09x = 23,686,811,221.16
  5. Step 5: Solve for x
    x = 23,686,811,221.16/154,360.09
  6. Step 6: Final answer
    x = 153,451.65

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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.