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Finding the Fourth Proportional to 142,887.65, 214,336.94 and 72,684.95

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Solution

The fourth proportional to 142,887.65, 214,336.94 and 72,684.95 is: 109,030.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,887.65 : 214,336.94 = 72,684.95 : x
  2. Step 2: Convert to fraction form
    142,887.65/214,336.94 = 72,684.95/x
  3. Step 3: Cross multiply
    142,887.65x = 214,336.94 × 72,684.95
  4. Step 4: Simplify right side
    142,887.65x = 15,579,068,331.94
  5. Step 5: Solve for x
    x = 15,579,068,331.94/142,887.65
  6. Step 6: Final answer
    x = 109,030.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.