Home / 142,509.77-196,663.19-78,847.41

Finding the Fourth Proportional to 142,509.77, 196,663.19 and 78,847.41

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Solution

The fourth proportional to 142,509.77, 196,663.19 and 78,847.41 is: 108,809.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,509.77 : 196,663.19 = 78,847.41 : x
  2. Step 2: Convert to fraction form
    142,509.77/196,663.19 = 78,847.41/x
  3. Step 3: Cross multiply
    142,509.77x = 196,663.19 × 78,847.41
  4. Step 4: Simplify right side
    142,509.77x = 15,506,382,779.60
  5. Step 5: Solve for x
    x = 15,506,382,779.60/142,509.77
  6. Step 6: Final answer
    x = 108,809.26

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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.