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Finding the Fourth Proportional to 155,706.65, 214,875.18 and 84,086.67

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Solution

The fourth proportional to 155,706.65, 214,875.18 and 84,086.67 is: 116,039.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,706.65 : 214,875.18 = 84,086.67 : x
  2. Step 2: Convert to fraction form
    155,706.65/214,875.18 = 84,086.67/x
  3. Step 3: Cross multiply
    155,706.65x = 214,875.18 × 84,086.67
  4. Step 4: Simplify right side
    155,706.65x = 18,068,137,230.74
  5. Step 5: Solve for x
    x = 18,068,137,230.74/155,706.65
  6. Step 6: Final answer
    x = 116,039.60

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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.