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Finding the Fourth Proportional to 153,911.84, 212,396.88 and 85,924.46

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Solution

The fourth proportional to 153,911.84, 212,396.88 and 85,924.46 is: 118,574.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,911.84 : 212,396.88 = 85,924.46 : x
  2. Step 2: Convert to fraction form
    153,911.84/212,396.88 = 85,924.46/x
  3. Step 3: Cross multiply
    153,911.84x = 212,396.88 × 85,924.46
  4. Step 4: Simplify right side
    153,911.84x = 18,250,087,219.68
  5. Step 5: Solve for x
    x = 18,250,087,219.68/153,911.84
  6. Step 6: Final answer
    x = 118,574.94

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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.