Home / 153,782.07-212,306.45-100,040.19

Finding the Fourth Proportional to 153,782.07, 212,306.45 and 100,040.19

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Solution

The fourth proportional to 153,782.07, 212,306.45 and 100,040.19 is: 138,112.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,782.07 : 212,306.45 = 100,040.19 : x
  2. Step 2: Convert to fraction form
    153,782.07/212,306.45 = 100,040.19/x
  3. Step 3: Cross multiply
    153,782.07x = 212,306.45 × 100,040.19
  4. Step 4: Simplify right side
    153,782.07x = 21,239,177,096.02
  5. Step 5: Solve for x
    x = 21,239,177,096.02/153,782.07
  6. Step 6: Final answer
    x = 138,112.18

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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.