Home / 153,690.08-212,093.51-85,711.37

Finding the Fourth Proportional to 153,690.08, 212,093.51 and 85,711.37

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Solution

The fourth proportional to 153,690.08, 212,093.51 and 85,711.37 is: 118,282.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,690.08 : 212,093.51 = 85,711.37 : x
  2. Step 2: Convert to fraction form
    153,690.08/212,093.51 = 85,711.37/x
  3. Step 3: Cross multiply
    153,690.08x = 212,093.51 × 85,711.37
  4. Step 4: Simplify right side
    153,690.08x = 18,178,823,821.18
  5. Step 5: Solve for x
    x = 18,178,823,821.18/153,690.08
  6. Step 6: Final answer
    x = 118,282.35

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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.