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Finding the Fourth Proportional to 153,919, 212,443.58 and 90,277.30

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Solution

The fourth proportional to 153,919, 212,443.58 and 90,277.30 is: 124,603.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,919 : 212,443.58 = 90,277.30 : x
  2. Step 2: Convert to fraction form
    153,919/212,443.58 = 90,277.30/x
  3. Step 3: Cross multiply
    153,919x = 212,443.58 × 90,277.30
  4. Step 4: Simplify right side
    153,919x = 19,178,832,804.73
  5. Step 5: Solve for x
    x = 19,178,832,804.73/153,919
  6. Step 6: Final answer
    x = 124,603.41

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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.