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Finding the Fourth Proportional to 144,712.60, 217,068.90 and 65,980.60

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Solution

The fourth proportional to 144,712.60, 217,068.90 and 65,980.60 is: 98,970.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,712.60 : 217,068.90 = 65,980.60 : x
  2. Step 2: Convert to fraction form
    144,712.60/217,068.90 = 65,980.60/x
  3. Step 3: Cross multiply
    144,712.60x = 217,068.90 × 65,980.60
  4. Step 4: Simplify right side
    144,712.60x = 14,322,336,263.34
  5. Step 5: Solve for x
    x = 14,322,336,263.34/144,712.60
  6. Step 6: Final answer
    x = 98,970.90

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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.