Home / 128,263.81-177,002.75-71,675.18

Finding the Fourth Proportional to 128,263.81, 177,002.75 and 71,675.18

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Solution

The fourth proportional to 128,263.81, 177,002.75 and 71,675.18 is: 98,911.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,263.81 : 177,002.75 = 71,675.18 : x
  2. Step 2: Convert to fraction form
    128,263.81/177,002.75 = 71,675.18/x
  3. Step 3: Cross multiply
    128,263.81x = 177,002.75 × 71,675.18
  4. Step 4: Simplify right side
    128,263.81x = 12,686,703,608.37
  5. Step 5: Solve for x
    x = 12,686,703,608.37/128,263.81
  6. Step 6: Final answer
    x = 98,911.02

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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.