Home / 154,242.58-212,853.28-86,258.80

Finding the Fourth Proportional to 154,242.58, 212,853.28 and 86,258.80

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Solution

The fourth proportional to 154,242.58, 212,853.28 and 86,258.80 is: 119,036.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,242.58 : 212,853.28 = 86,258.80 : x
  2. Step 2: Convert to fraction form
    154,242.58/212,853.28 = 86,258.80/x
  3. Step 3: Cross multiply
    154,242.58x = 212,853.28 × 86,258.80
  4. Step 4: Simplify right side
    154,242.58x = 18,360,468,508.86
  5. Step 5: Solve for x
    x = 18,360,468,508.86/154,242.58
  6. Step 6: Final answer
    x = 119,036.32

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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.