Home / 142,360.56-196,440.48-78,689.64

Finding the Fourth Proportional to 142,360.56, 196,440.48 and 78,689.64

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Solution

The fourth proportional to 142,360.56, 196,440.48 and 78,689.64 is: 108,582.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,360.56 : 196,440.48 = 78,689.64 : x
  2. Step 2: Convert to fraction form
    142,360.56/196,440.48 = 78,689.64/x
  3. Step 3: Cross multiply
    142,360.56x = 196,440.48 × 78,689.64
  4. Step 4: Simplify right side
    142,360.56x = 15,457,830,652.63
  5. Step 5: Solve for x
    x = 15,457,830,652.63/142,360.56
  6. Step 6: Final answer
    x = 108,582.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.