Home / 154,270.40-212,888.84-86,287.50

Finding the Fourth Proportional to 154,270.40, 212,888.84 and 86,287.50

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Solution

The fourth proportional to 154,270.40, 212,888.84 and 86,287.50 is: 119,074.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,270.40 : 212,888.84 = 86,287.50 : x
  2. Step 2: Convert to fraction form
    154,270.40/212,888.84 = 86,287.50/x
  3. Step 3: Cross multiply
    154,270.40x = 212,888.84 × 86,287.50
  4. Step 4: Simplify right side
    154,270.40x = 18,369,645,350.06
  5. Step 5: Solve for x
    x = 18,369,645,350.06/154,270.40
  6. Step 6: Final answer
    x = 119,074.34

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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.