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Finding the Fourth Proportional to 153,166.61, 211,338.69 and 89,492.11

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Solution

The fourth proportional to 153,166.61, 211,338.69 and 89,492.11 is: 123,480.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,166.61 : 211,338.69 = 89,492.11 : x
  2. Step 2: Convert to fraction form
    153,166.61/211,338.69 = 89,492.11/x
  3. Step 3: Cross multiply
    153,166.61x = 211,338.69 × 89,492.11
  4. Step 4: Simplify right side
    153,166.61x = 18,913,145,292.74
  5. Step 5: Solve for x
    x = 18,913,145,292.74/153,166.61
  6. Step 6: Final answer
    x = 123,480.86

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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.