Home / 142,336.18-196,423.90-77,805.68

Finding the Fourth Proportional to 142,336.18, 196,423.90 and 77,805.68

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Solution

The fourth proportional to 142,336.18, 196,423.90 and 77,805.68 is: 107,371.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,336.18 : 196,423.90 = 77,805.68 : x
  2. Step 2: Convert to fraction form
    142,336.18/196,423.90 = 77,805.68/x
  3. Step 3: Cross multiply
    142,336.18x = 196,423.90 × 77,805.68
  4. Step 4: Simplify right side
    142,336.18x = 15,282,893,931.12
  5. Step 5: Solve for x
    x = 15,282,893,931.12/142,336.18
  6. Step 6: Final answer
    x = 107,371.81

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1.5x scale

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.