Home / 143,038.19-197,255.53-85,668.32

Finding the Fourth Proportional to 143,038.19, 197,255.53 and 85,668.32

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Solution

The fourth proportional to 143,038.19, 197,255.53 and 85,668.32 is: 118,140.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,038.19 : 197,255.53 = 85,668.32 : x
  2. Step 2: Convert to fraction form
    143,038.19/197,255.53 = 85,668.32/x
  3. Step 3: Cross multiply
    143,038.19x = 197,255.53 × 85,668.32
  4. Step 4: Simplify right side
    143,038.19x = 16,898,550,466.03
  5. Step 5: Solve for x
    x = 16,898,550,466.03/143,038.19
  6. Step 6: Final answer
    x = 118,140.13

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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.