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Finding the Fourth Proportional to 153,522, 211,860.36 and 89,856.72

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Solution

The fourth proportional to 153,522, 211,860.36 and 89,856.72 is: 124,002.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,522 : 211,860.36 = 89,856.72 : x
  2. Step 2: Convert to fraction form
    153,522/211,860.36 = 89,856.72/x
  3. Step 3: Cross multiply
    153,522x = 211,860.36 × 89,856.72
  4. Step 4: Simplify right side
    153,522x = 19,037,077,047.62
  5. Step 5: Solve for x
    x = 19,037,077,047.62/153,522
  6. Step 6: Final answer
    x = 124,002.27

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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.