Home / 153,777.03-212,207.49-90,157.20

Finding the Fourth Proportional to 153,777.03, 212,207.49 and 90,157.20

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Solution

The fourth proportional to 153,777.03, 212,207.49 and 90,157.20 is: 124,414.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,777.03 : 212,207.49 = 90,157.20 : x
  2. Step 2: Convert to fraction form
    153,777.03/212,207.49 = 90,157.20/x
  3. Step 3: Cross multiply
    153,777.03x = 212,207.49 × 90,157.20
  4. Step 4: Simplify right side
    153,777.03x = 19,132,033,117.43
  5. Step 5: Solve for x
    x = 19,132,033,117.43/153,777.03
  6. Step 6: Final answer
    x = 124,414.12

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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.