Home / 128,005.06-176,645.74-70,644.91

Finding the Fourth Proportional to 128,005.06, 176,645.74 and 70,644.91

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Solution

The fourth proportional to 128,005.06, 176,645.74 and 70,644.91 is: 97,489.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,005.06 : 176,645.74 = 70,644.91 : x
  2. Step 2: Convert to fraction form
    128,005.06/176,645.74 = 70,644.91/x
  3. Step 3: Cross multiply
    128,005.06x = 176,645.74 × 70,644.91
  4. Step 4: Simplify right side
    128,005.06x = 12,479,122,404.18
  5. Step 5: Solve for x
    x = 12,479,122,404.18/128,005.06
  6. Step 6: Final answer
    x = 97,489.29

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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.