Home / 128,110.66-176,794.13-70,749.89

Finding the Fourth Proportional to 128,110.66, 176,794.13 and 70,749.89

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Solution

The fourth proportional to 128,110.66, 176,794.13 and 70,749.89 is: 97,635.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,110.66 : 176,794.13 = 70,749.89 : x
  2. Step 2: Convert to fraction form
    128,110.66/176,794.13 = 70,749.89/x
  3. Step 3: Cross multiply
    128,110.66x = 176,794.13 × 70,749.89
  4. Step 4: Simplify right side
    128,110.66x = 12,508,164,808.06
  5. Step 5: Solve for x
    x = 12,508,164,808.06/128,110.66
  6. Step 6: Final answer
    x = 97,635.63

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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.