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Finding the Fourth Proportional to 127,313.80, 190,970.70 and 72,017.80

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Solution

The fourth proportional to 127,313.80, 190,970.70 and 72,017.80 is: 108,026.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,313.80 : 190,970.70 = 72,017.80 : x
  2. Step 2: Convert to fraction form
    127,313.80/190,970.70 = 72,017.80/x
  3. Step 3: Cross multiply
    127,313.80x = 190,970.70 × 72,017.80
  4. Step 4: Simplify right side
    127,313.80x = 13,753,289,678.46
  5. Step 5: Solve for x
    x = 13,753,289,678.46/127,313.80
  6. Step 6: Final answer
    x = 108,026.70

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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.