Home / 128,307.14-177,056.68-70,943.14

Finding the Fourth Proportional to 128,307.14, 177,056.68 and 70,943.14

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Solution

The fourth proportional to 128,307.14, 177,056.68 and 70,943.14 is: 97,897.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,307.14 : 177,056.68 = 70,943.14 : x
  2. Step 2: Convert to fraction form
    128,307.14/177,056.68 = 70,943.14/x
  3. Step 3: Cross multiply
    128,307.14x = 177,056.68 × 70,943.14
  4. Step 4: Simplify right side
    128,307.14x = 12,560,956,837.18
  5. Step 5: Solve for x
    x = 12,560,956,837.18/128,307.14
  6. Step 6: Final answer
    x = 97,897.57

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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.