Home / 154,655.84-213,440.04-86,684.36

Finding the Fourth Proportional to 154,655.84, 213,440.04 and 86,684.36

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Solution

The fourth proportional to 154,655.84, 213,440.04 and 86,684.36 is: 119,632.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,655.84 : 213,440.04 = 86,684.36 : x
  2. Step 2: Convert to fraction form
    154,655.84/213,440.04 = 86,684.36/x
  3. Step 3: Cross multiply
    154,655.84x = 213,440.04 × 86,684.36
  4. Step 4: Simplify right side
    154,655.84x = 18,501,913,265.77
  5. Step 5: Solve for x
    x = 18,501,913,265.77/154,655.84
  6. Step 6: Final answer
    x = 119,632.81

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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.