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Finding the Fourth Proportional to 127,056.65, 190,602.52 and 42,840.88

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Solution

The fourth proportional to 127,056.65, 190,602.52 and 42,840.88 is: 64,267.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,056.65 : 190,602.52 = 42,840.88 : x
  2. Step 2: Convert to fraction form
    127,056.65/190,602.52 = 42,840.88/x
  3. Step 3: Cross multiply
    127,056.65x = 190,602.52 × 42,840.88
  4. Step 4: Simplify right side
    127,056.65x = 8,165,579,103.41
  5. Step 5: Solve for x
    x = 8,165,579,103.41/127,056.65
  6. Step 6: Final answer
    x = 64,267.23

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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.