Home / 153,690.40-212,113.44-90,053.56

Finding the Fourth Proportional to 153,690.40, 212,113.44 and 90,053.56

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Solution

The fourth proportional to 153,690.40, 212,113.44 and 90,053.56 is: 124,286.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,690.40 : 212,113.44 = 90,053.56 : x
  2. Step 2: Convert to fraction form
    153,690.40/212,113.44 = 90,053.56/x
  3. Step 3: Cross multiply
    153,690.40x = 212,113.44 × 90,053.56
  4. Step 4: Simplify right side
    153,690.40x = 19,101,570,395.85
  5. Step 5: Solve for x
    x = 19,101,570,395.85/153,690.40
  6. Step 6: Final answer
    x = 124,286.03

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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.