Home / 153,862.12-212,331.30-90,201.64

Finding the Fourth Proportional to 153,862.12, 212,331.30 and 90,201.64

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Solution

The fourth proportional to 153,862.12, 212,331.30 and 90,201.64 is: 124,479.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,862.12 : 212,331.30 = 90,201.64 : x
  2. Step 2: Convert to fraction form
    153,862.12/212,331.30 = 90,201.64/x
  3. Step 3: Cross multiply
    153,862.12x = 212,331.30 × 90,201.64
  4. Step 4: Simplify right side
    153,862.12x = 19,152,631,483.33
  5. Step 5: Solve for x
    x = 19,152,631,483.33/153,862.12
  6. Step 6: Final answer
    x = 124,479.19

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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.