Home / 120,558,428.10-180,837,642.15-43,871,491.80

Finding the Fourth Proportional to 120,558,428.10, 180,837,642.15 and 43,871,491.80

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Solution

The fourth proportional to 120,558,428.10, 180,837,642.15 and 43,871,491.80 is: 65,807,237.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,558,428.10 : 180,837,642.15 = 43,871,491.80 : x
  2. Step 2: Convert to fraction form
    120,558,428.10/180,837,642.15 = 43,871,491.80/x
  3. Step 3: Cross multiply
    120,558,428.10x = 180,837,642.15 × 43,871,491.80
  4. Step 4: Simplify right side
    120,558,428.10x = 7,933,617,134,715,059
  5. Step 5: Solve for x
    x = 7,933,617,134,715,059/120,558,428.10
  6. Step 6: Final answer
    x = 65,807,237.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.