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Finding the Fourth Proportional to 127,210.68, 190,811.34 and 51,342.12

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Solution

The fourth proportional to 127,210.68, 190,811.34 and 51,342.12 is: 77,011.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,210.68 : 190,811.34 = 51,342.12 : x
  2. Step 2: Convert to fraction form
    127,210.68/190,811.34 = 51,342.12/x
  3. Step 3: Cross multiply
    127,210.68x = 190,811.34 × 51,342.12
  4. Step 4: Simplify right side
    127,210.68x = 9,796,658,715.64
  5. Step 5: Solve for x
    x = 9,796,658,715.64/127,210.68
  6. Step 6: Final answer
    x = 77,011.29

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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.