Home / 255,153.12-382,729.32-86,690.94

Finding the Fourth Proportional to 255,153.12, 382,729.32 and 86,690.94

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Solution

The fourth proportional to 255,153.12, 382,729.32 and 86,690.94 is: 130,036.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,153.12 : 382,729.32 = 86,690.94 : x
  2. Step 2: Convert to fraction form
    255,153.12/382,729.32 = 86,690.94/x
  3. Step 3: Cross multiply
    255,153.12x = 382,729.32 × 86,690.94
  4. Step 4: Simplify right side
    255,153.12x = 33,179,164,516.36
  5. Step 5: Solve for x
    x = 33,179,164,516.36/255,153.12
  6. Step 6: Final answer
    x = 130,036.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.