Home / 143,037.63-197,254.76-85,667.76

Finding the Fourth Proportional to 143,037.63, 197,254.76 and 85,667.76

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Solution

The fourth proportional to 143,037.63, 197,254.76 and 85,667.76 is: 118,139.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,037.63 : 197,254.76 = 85,667.76 : x
  2. Step 2: Convert to fraction form
    143,037.63/197,254.76 = 85,667.76/x
  3. Step 3: Cross multiply
    143,037.63x = 197,254.76 × 85,667.76
  4. Step 4: Simplify right side
    143,037.63x = 16,898,373,010.20
  5. Step 5: Solve for x
    x = 16,898,373,010.20/143,037.63
  6. Step 6: Final answer
    x = 118,139.35

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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.