Home / 142,030.80-196,002.32-78,368.58

Finding the Fourth Proportional to 142,030.80, 196,002.32 and 78,368.58

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Solution

The fourth proportional to 142,030.80, 196,002.32 and 78,368.58 is: 108,148.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,030.80 : 196,002.32 = 78,368.58 : x
  2. Step 2: Convert to fraction form
    142,030.80/196,002.32 = 78,368.58/x
  3. Step 3: Cross multiply
    142,030.80x = 196,002.32 × 78,368.58
  4. Step 4: Simplify right side
    142,030.80x = 15,360,423,103.26
  5. Step 5: Solve for x
    x = 15,360,423,103.26/142,030.80
  6. Step 6: Final answer
    x = 108,148.54

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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.