Home / 143,178.29-197,590.56-85,798.70

Finding the Fourth Proportional to 143,178.29, 197,590.56 and 85,798.70

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Solution

The fourth proportional to 143,178.29, 197,590.56 and 85,798.70 is: 118,404.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,178.29 : 197,590.56 = 85,798.70 : x
  2. Step 2: Convert to fraction form
    143,178.29/197,590.56 = 85,798.70/x
  3. Step 3: Cross multiply
    143,178.29x = 197,590.56 × 85,798.70
  4. Step 4: Simplify right side
    143,178.29x = 16,953,013,180.27
  5. Step 5: Solve for x
    x = 16,953,013,180.27/143,178.29
  6. Step 6: Final answer
    x = 118,404.91

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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.