Home / 142,981.34-197,337.74-79,339.64

Finding the Fourth Proportional to 142,981.34, 197,337.74 and 79,339.64

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Solution

The fourth proportional to 142,981.34, 197,337.74 and 79,339.64 is: 109,501.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,981.34 : 197,337.74 = 79,339.64 : x
  2. Step 2: Convert to fraction form
    142,981.34/197,337.74 = 79,339.64/x
  3. Step 3: Cross multiply
    142,981.34x = 197,337.74 × 79,339.64
  4. Step 4: Simplify right side
    142,981.34x = 15,656,703,866.63
  5. Step 5: Solve for x
    x = 15,656,703,866.63/142,981.34
  6. Step 6: Final answer
    x = 109,501.73

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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.