Home / 94,290.12-130,112.64-55,521.78

Finding the Fourth Proportional to 94,290.12, 130,112.64 and 55,521.78

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Solution

The fourth proportional to 94,290.12, 130,112.64 and 55,521.78 is: 76,615.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,290.12 : 130,112.64 = 55,521.78 : x
  2. Step 2: Convert to fraction form
    94,290.12/130,112.64 = 55,521.78/x
  3. Step 3: Cross multiply
    94,290.12x = 130,112.64 × 55,521.78
  4. Step 4: Simplify right side
    94,290.12x = 7,224,085,373.30
  5. Step 5: Solve for x
    x = 7,224,085,373.30/94,290.12
  6. Step 6: Final answer
    x = 76,615.51

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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.