Home / 154,299.60-212,953.05-86,320.35

Finding the Fourth Proportional to 154,299.60, 212,953.05 and 86,320.35

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Solution

The fourth proportional to 154,299.60, 212,953.05 and 86,320.35 is: 119,133.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,299.60 : 212,953.05 = 86,320.35 : x
  2. Step 2: Convert to fraction form
    154,299.60/212,953.05 = 86,320.35/x
  3. Step 3: Cross multiply
    154,299.60x = 212,953.05 × 86,320.35
  4. Step 4: Simplify right side
    154,299.60x = 18,382,181,809.57
  5. Step 5: Solve for x
    x = 18,382,181,809.57/154,299.60
  6. Step 6: Final answer
    x = 119,133.05

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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.