Home / 233,130,768.64-321,720,939.84-128,709,041.92

Finding the Fourth Proportional to 233,130,768.64, 321,720,939.84 and 128,709,041.92

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Solution

The fourth proportional to 233,130,768.64, 321,720,939.84 and 128,709,041.92 is: 177,618,742.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    233,130,768.64 : 321,720,939.84 = 128,709,041.92 : x
  2. Step 2: Convert to fraction form
    233,130,768.64/321,720,939.84 = 128,709,041.92/x
  3. Step 3: Cross multiply
    233,130,768.64x = 321,720,939.84 × 128,709,041.92
  4. Step 4: Simplify right side
    233,130,768.64x = 41,408,393,932,408,352
  5. Step 5: Solve for x
    x = 41,408,393,932,408,352/233,130,768.64
  6. Step 6: Final answer
    x = 177,618,742.36

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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.