Home / 142,032.12-196,008.41-78,374.02

Finding the Fourth Proportional to 142,032.12, 196,008.41 and 78,374.02

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Solution

The fourth proportional to 142,032.12, 196,008.41 and 78,374.02 is: 108,158.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,032.12 : 196,008.41 = 78,374.02 : x
  2. Step 2: Convert to fraction form
    142,032.12/196,008.41 = 78,374.02/x
  3. Step 3: Cross multiply
    142,032.12x = 196,008.41 × 78,374.02
  4. Step 4: Simplify right side
    142,032.12x = 15,361,967,045.51
  5. Step 5: Solve for x
    x = 15,361,967,045.51/142,032.12
  6. Step 6: Final answer
    x = 108,158.40

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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.