Home / 142,941.85-197,254.71-79,285.57

Finding the Fourth Proportional to 142,941.85, 197,254.71 and 79,285.57

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Solution

The fourth proportional to 142,941.85, 197,254.71 and 79,285.57 is: 109,411.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,941.85 : 197,254.71 = 79,285.57 : x
  2. Step 2: Convert to fraction form
    142,941.85/197,254.71 = 79,285.57/x
  3. Step 3: Cross multiply
    142,941.85x = 197,254.71 × 79,285.57
  4. Step 4: Simplify right side
    142,941.85x = 15,639,451,624.40
  5. Step 5: Solve for x
    x = 15,639,451,624.40/142,941.85
  6. Step 6: Final answer
    x = 109,411.29

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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.