Home / 154,151.81-212,725.02-86,168.91

Finding the Fourth Proportional to 154,151.81, 212,725.02 and 86,168.91

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Solution

The fourth proportional to 154,151.81, 212,725.02 and 86,168.91 is: 118,910.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,151.81 : 212,725.02 = 86,168.91 : x
  2. Step 2: Convert to fraction form
    154,151.81/212,725.02 = 86,168.91/x
  3. Step 3: Cross multiply
    154,151.81x = 212,725.02 × 86,168.91
  4. Step 4: Simplify right side
    154,151.81x = 18,330,282,672.28
  5. Step 5: Solve for x
    x = 18,330,282,672.28/154,151.81
  6. Step 6: Final answer
    x = 118,910.59

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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.