Home / 154,756,320.45-213,563,715.01-85,140,206.66

Finding the Fourth Proportional to 154,756,320.45, 213,563,715.01 and 85,140,206.66

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Solution

The fourth proportional to 154,756,320.45, 213,563,715.01 and 85,140,206.66 is: 117,493,481.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,756,320.45 : 213,563,715.01 = 85,140,206.66 : x
  2. Step 2: Convert to fraction form
    154,756,320.45/213,563,715.01 = 85,140,206.66/x
  3. Step 3: Cross multiply
    154,756,320.45x = 213,563,715.01 × 85,140,206.66
  4. Step 4: Simplify right side
    154,756,320.45x = 18,182,858,829,535,224
  5. Step 5: Solve for x
    x = 18,182,858,829,535,224/154,756,320.45
  6. Step 6: Final answer
    x = 117,493,481.21

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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.