Home / 128,045.35-176,712.38-70,695.73

Finding the Fourth Proportional to 128,045.35, 176,712.38 and 70,695.73

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Solution

The fourth proportional to 128,045.35, 176,712.38 and 70,695.73 is: 97,565.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,045.35 : 176,712.38 = 70,695.73 : x
  2. Step 2: Convert to fraction form
    128,045.35/176,712.38 = 70,695.73/x
  3. Step 3: Cross multiply
    128,045.35x = 176,712.38 × 70,695.73
  4. Step 4: Simplify right side
    128,045.35x = 12,492,810,704.14
  5. Step 5: Solve for x
    x = 12,492,810,704.14/128,045.35
  6. Step 6: Final answer
    x = 97,565.52

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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.