Home / 128,759,275.92-178,155,692.36-112,273,776.72

Finding the Fourth Proportional to 128,759,275.92, 178,155,692.36 and 112,273,776.72

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Solution

The fourth proportional to 128,759,275.92, 178,155,692.36 and 112,273,776.72 is: 155,345,797.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,759,275.92 : 178,155,692.36 = 112,273,776.72 : x
  2. Step 2: Convert to fraction form
    128,759,275.92/178,155,692.36 = 112,273,776.72/x
  3. Step 3: Cross multiply
    128,759,275.92x = 178,155,692.36 × 112,273,776.72
  4. Step 4: Simplify right side
    128,759,275.92x = 20,002,212,425,423,652
  5. Step 5: Solve for x
    x = 20,002,212,425,423,652/128,759,275.92
  6. Step 6: Final answer
    x = 155,345,797.67

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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.