Home / 154,518.84-213,240.70-86,535.64

Finding the Fourth Proportional to 154,518.84, 213,240.70 and 86,535.64

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Solution

The fourth proportional to 154,518.84, 213,240.70 and 86,535.64 is: 119,421.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,518.84 : 213,240.70 = 86,535.64 : x
  2. Step 2: Convert to fraction form
    154,518.84/213,240.70 = 86,535.64/x
  3. Step 3: Cross multiply
    154,518.84x = 213,240.70 × 86,535.64
  4. Step 4: Simplify right side
    154,518.84x = 18,452,920,823.27
  5. Step 5: Solve for x
    x = 18,452,920,823.27/154,518.84
  6. Step 6: Final answer
    x = 119,421.82

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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.