Home / 153,771.03-212,199.21-90,151.20

Finding the Fourth Proportional to 153,771.03, 212,199.21 and 90,151.20

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Solution

The fourth proportional to 153,771.03, 212,199.21 and 90,151.20 is: 124,405.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,771.03 : 212,199.21 = 90,151.20 : x
  2. Step 2: Convert to fraction form
    153,771.03/212,199.21 = 90,151.20/x
  3. Step 3: Cross multiply
    153,771.03x = 212,199.21 × 90,151.20
  4. Step 4: Simplify right side
    153,771.03x = 19,130,013,420.55
  5. Step 5: Solve for x
    x = 19,130,013,420.55/153,771.03
  6. Step 6: Final answer
    x = 124,405.84

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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.