Home / 153,346.40-211,617.60-86,278.40

Finding the Fourth Proportional to 153,346.40, 211,617.60 and 86,278.40

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Solution

The fourth proportional to 153,346.40, 211,617.60 and 86,278.40 is: 119,063.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,346.40 : 211,617.60 = 86,278.40 : x
  2. Step 2: Convert to fraction form
    153,346.40/211,617.60 = 86,278.40/x
  3. Step 3: Cross multiply
    153,346.40x = 211,617.60 × 86,278.40
  4. Step 4: Simplify right side
    153,346.40x = 18,258,027,939.84
  5. Step 5: Solve for x
    x = 18,258,027,939.84/153,346.40
  6. Step 6: Final answer
    x = 119,063.95

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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.