Home / 145,017,440.16-200,126,620.79-78,939,837.69

Finding the Fourth Proportional to 145,017,440.16, 200,126,620.79 and 78,939,837.69

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Solution

The fourth proportional to 145,017,440.16, 200,126,620.79 and 78,939,837.69 is: 108,938,365.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,017,440.16 : 200,126,620.79 = 78,939,837.69 : x
  2. Step 2: Convert to fraction form
    145,017,440.16/200,126,620.79 = 78,939,837.69/x
  3. Step 3: Cross multiply
    145,017,440.16x = 200,126,620.79 × 78,939,837.69
  4. Step 4: Simplify right side
    145,017,440.16x = 15,797,962,962,610,778
  5. Step 5: Solve for x
    x = 15,797,962,962,610,778/145,017,440.16
  6. Step 6: Final answer
    x = 108,938,365.93

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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.