Home / 128,417.03-177,200.31-71,048.76

Finding the Fourth Proportional to 128,417.03, 177,200.31 and 71,048.76

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Solution

The fourth proportional to 128,417.03, 177,200.31 and 71,048.76 is: 98,038.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,417.03 : 177,200.31 = 71,048.76 : x
  2. Step 2: Convert to fraction form
    128,417.03/177,200.31 = 71,048.76/x
  3. Step 3: Cross multiply
    128,417.03x = 177,200.31 × 71,048.76
  4. Step 4: Simplify right side
    128,417.03x = 12,589,862,496.15
  5. Step 5: Solve for x
    x = 12,589,862,496.15/128,417.03
  6. Step 6: Final answer
    x = 98,038.89

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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.