Home / 153,945.54-212,445.81-90,284.58

Finding the Fourth Proportional to 153,945.54, 212,445.81 and 90,284.58

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Solution

The fourth proportional to 153,945.54, 212,445.81 and 90,284.58 is: 124,593.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,945.54 : 212,445.81 = 90,284.58 : x
  2. Step 2: Convert to fraction form
    153,945.54/212,445.81 = 90,284.58/x
  3. Step 3: Cross multiply
    153,945.54x = 212,445.81 × 90,284.58
  4. Step 4: Simplify right side
    153,945.54x = 19,180,580,728.61
  5. Step 5: Solve for x
    x = 19,180,580,728.61/153,945.54
  6. Step 6: Final answer
    x = 124,593.29

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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.