Home / 154,655.59-213,439.70-86,684.11

Finding the Fourth Proportional to 154,655.59, 213,439.70 and 86,684.11

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Solution

The fourth proportional to 154,655.59, 213,439.70 and 86,684.11 is: 119,632.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,655.59 : 213,439.70 = 86,684.11 : x
  2. Step 2: Convert to fraction form
    154,655.59/213,439.70 = 86,684.11/x
  3. Step 3: Cross multiply
    154,655.59x = 213,439.70 × 86,684.11
  4. Step 4: Simplify right side
    154,655.59x = 18,501,830,433.17
  5. Step 5: Solve for x
    x = 18,501,830,433.17/154,655.59
  6. Step 6: Final answer
    x = 119,632.47

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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.