Home / 154,141.52-212,714.69-86,158.47

Finding the Fourth Proportional to 154,141.52, 212,714.69 and 86,158.47

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Solution

The fourth proportional to 154,141.52, 212,714.69 and 86,158.47 is: 118,898.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,141.52 : 212,714.69 = 86,158.47 : x
  2. Step 2: Convert to fraction form
    154,141.52/212,714.69 = 86,158.47/x
  3. Step 3: Cross multiply
    154,141.52x = 212,714.69 × 86,158.47
  4. Step 4: Simplify right side
    154,141.52x = 18,327,171,806.13
  5. Step 5: Solve for x
    x = 18,327,171,806.13/154,141.52
  6. Step 6: Final answer
    x = 118,898.35

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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.