Home / 128,245.06-176,972.69-70,881.42

Finding the Fourth Proportional to 128,245.06, 176,972.69 and 70,881.42

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Solution

The fourth proportional to 128,245.06, 176,972.69 and 70,881.42 is: 97,813.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,245.06 : 176,972.69 = 70,881.42 : x
  2. Step 2: Convert to fraction form
    128,245.06/176,972.69 = 70,881.42/x
  3. Step 3: Cross multiply
    128,245.06x = 176,972.69 × 70,881.42
  4. Step 4: Simplify right side
    128,245.06x = 12,544,075,568.42
  5. Step 5: Solve for x
    x = 12,544,075,568.42/128,245.06
  6. Step 6: Final answer
    x = 97,813.32

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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.