Home / 154,655.07-213,420.45-90,120.20

Finding the Fourth Proportional to 154,655.07, 213,420.45 and 90,120.20

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Solution

The fourth proportional to 154,655.07, 213,420.45 and 90,120.20 is: 124,363.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,655.07 : 213,420.45 = 90,120.20 : x
  2. Step 2: Convert to fraction form
    154,655.07/213,420.45 = 90,120.20/x
  3. Step 3: Cross multiply
    154,655.07x = 213,420.45 × 90,120.20
  4. Step 4: Simplify right side
    154,655.07x = 19,233,492,148.55
  5. Step 5: Solve for x
    x = 19,233,492,148.55/154,655.07
  6. Step 6: Final answer
    x = 124,363.80

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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.