Home / 128,048.85-176,717.21-70,699.23

Finding the Fourth Proportional to 128,048.85, 176,717.21 and 70,699.23

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Solution

The fourth proportional to 128,048.85, 176,717.21 and 70,699.23 is: 97,570.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,048.85 : 176,717.21 = 70,699.23 : x
  2. Step 2: Convert to fraction form
    128,048.85/176,717.21 = 70,699.23/x
  3. Step 3: Cross multiply
    128,048.85x = 176,717.21 × 70,699.23
  4. Step 4: Simplify right side
    128,048.85x = 12,493,770,321.25
  5. Step 5: Solve for x
    x = 12,493,770,321.25/128,048.85
  6. Step 6: Final answer
    x = 97,570.34

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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.