Home / 128,266,041.88-177,154,217.10-84,408,817.77

Finding the Fourth Proportional to 128,266,041.88, 177,154,217.10 and 84,408,817.77

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Solution

The fourth proportional to 128,266,041.88, 177,154,217.10 and 84,408,817.77 is: 116,580,957.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,266,041.88 : 177,154,217.10 = 84,408,817.77 : x
  2. Step 2: Convert to fraction form
    128,266,041.88/177,154,217.10 = 84,408,817.77/x
  3. Step 3: Cross multiply
    128,266,041.88x = 177,154,217.10 × 84,408,817.77
  4. Step 4: Simplify right side
    128,266,041.88x = 14,953,378,028,380,916
  5. Step 5: Solve for x
    x = 14,953,378,028,380,916/128,266,041.88
  6. Step 6: Final answer
    x = 116,580,957.90

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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.