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Finding the Fourth Proportional to 142,664.40, 214,457.40 and 101,397.20

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Solution

The fourth proportional to 142,664.40, 214,457.40 and 101,397.20 is: 152,423.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,664.40 : 214,457.40 = 101,397.20 : x
  2. Step 2: Convert to fraction form
    142,664.40/214,457.40 = 101,397.20/x
  3. Step 3: Cross multiply
    142,664.40x = 214,457.40 × 101,397.20
  4. Step 4: Simplify right side
    142,664.40x = 21,745,379,879.28
  5. Step 5: Solve for x
    x = 21,745,379,879.28/142,664.40
  6. Step 6: Final answer
    x = 152,423.31

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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.