Home / 153,784.88-212,223.34-90,122.63

Finding the Fourth Proportional to 153,784.88, 212,223.34 and 90,122.63

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Solution

The fourth proportional to 153,784.88, 212,223.34 and 90,122.63 is: 124,369.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,784.88 : 212,223.34 = 90,122.63 : x
  2. Step 2: Convert to fraction form
    153,784.88/212,223.34 = 90,122.63/x
  3. Step 3: Cross multiply
    153,784.88x = 212,223.34 × 90,122.63
  4. Step 4: Simplify right side
    153,784.88x = 19,126,124,599.72
  5. Step 5: Solve for x
    x = 19,126,124,599.72/153,784.88
  6. Step 6: Final answer
    x = 124,369.34

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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.