Home / 128,027.84-176,681.40-70,668.03

Finding the Fourth Proportional to 128,027.84, 176,681.40 and 70,668.03

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Solution

The fourth proportional to 128,027.84, 176,681.40 and 70,668.03 is: 97,523.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,027.84 : 176,681.40 = 70,668.03 : x
  2. Step 2: Convert to fraction form
    128,027.84/176,681.40 = 70,668.03/x
  3. Step 3: Cross multiply
    128,027.84x = 176,681.40 × 70,668.03
  4. Step 4: Simplify right side
    128,027.84x = 12,485,726,475.64
  5. Step 5: Solve for x
    x = 12,485,726,475.64/128,027.84
  6. Step 6: Final answer
    x = 97,523.53

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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.