Home / 142,038.24-196,011.06-78,374.64

Finding the Fourth Proportional to 142,038.24, 196,011.06 and 78,374.64

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Solution

The fourth proportional to 142,038.24, 196,011.06 and 78,374.64 is: 108,156.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,038.24 : 196,011.06 = 78,374.64 : x
  2. Step 2: Convert to fraction form
    142,038.24/196,011.06 = 78,374.64/x
  3. Step 3: Cross multiply
    142,038.24x = 196,011.06 × 78,374.64
  4. Step 4: Simplify right side
    142,038.24x = 15,362,296,263.52
  5. Step 5: Solve for x
    x = 15,362,296,263.52/142,038.24
  6. Step 6: Final answer
    x = 108,156.06

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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.