Home / 128,885,018.28-177,861,315.35-70,148,104.54

Finding the Fourth Proportional to 128,885,018.28, 177,861,315.35 and 70,148,104.54

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Solution

The fourth proportional to 128,885,018.28, 177,861,315.35 and 70,148,104.54 is: 96,804,378.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,885,018.28 : 177,861,315.35 = 70,148,104.54 : x
  2. Step 2: Convert to fraction form
    128,885,018.28/177,861,315.35 = 70,148,104.54/x
  3. Step 3: Cross multiply
    128,885,018.28x = 177,861,315.35 × 70,148,104.54
  4. Step 4: Simplify right side
    128,885,018.28x = 12,476,634,142,793,708
  5. Step 5: Solve for x
    x = 12,476,634,142,793,708/128,885,018.28
  6. Step 6: Final answer
    x = 96,804,378.89

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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.