Home / 128,038.23-176,710.55-71,453.25

Finding the Fourth Proportional to 128,038.23, 176,710.55 and 71,453.25

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Solution

The fourth proportional to 128,038.23, 176,710.55 and 71,453.25 is: 98,615.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,038.23 : 176,710.55 = 71,453.25 : x
  2. Step 2: Convert to fraction form
    128,038.23/176,710.55 = 71,453.25/x
  3. Step 3: Cross multiply
    128,038.23x = 176,710.55 × 71,453.25
  4. Step 4: Simplify right side
    128,038.23x = 12,626,542,749.52
  5. Step 5: Solve for x
    x = 12,626,542,749.52/128,038.23
  6. Step 6: Final answer
    x = 98,615.41

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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.