Home / 189,451,011.10-284,176,516.65-128,229,007.90

Finding the Fourth Proportional to 189,451,011.10, 284,176,516.65 and 128,229,007.90

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Solution

The fourth proportional to 189,451,011.10, 284,176,516.65 and 128,229,007.90 is: 192,343,511.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,451,011.10 : 284,176,516.65 = 128,229,007.90 : x
  2. Step 2: Convert to fraction form
    189,451,011.10/284,176,516.65 = 128,229,007.90/x
  3. Step 3: Cross multiply
    189,451,011.10x = 284,176,516.65 × 128,229,007.90
  4. Step 4: Simplify right side
    189,451,011.10x = 36,439,672,798,507,328
  5. Step 5: Solve for x
    x = 36,439,672,798,507,328/189,451,011.10
  6. Step 6: Final answer
    x = 192,343,511.85

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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.