Home / 154,679.56-213,460.31-86,711.65

Finding the Fourth Proportional to 154,679.56, 213,460.31 and 86,711.65

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Solution

The fourth proportional to 154,679.56, 213,460.31 and 86,711.65 is: 119,663.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,679.56 : 213,460.31 = 86,711.65 : x
  2. Step 2: Convert to fraction form
    154,679.56/213,460.31 = 86,711.65/x
  3. Step 3: Cross multiply
    154,679.56x = 213,460.31 × 86,711.65
  4. Step 4: Simplify right side
    154,679.56x = 18,509,495,372.74
  5. Step 5: Solve for x
    x = 18,509,495,372.74/154,679.56
  6. Step 6: Final answer
    x = 119,663.49

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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.