Home / 127,872,002.10-191,808,003.15-76,811,675.70

Finding the Fourth Proportional to 127,872,002.10, 191,808,003.15 and 76,811,675.70

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Solution

The fourth proportional to 127,872,002.10, 191,808,003.15 and 76,811,675.70 is: 115,217,513.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,872,002.10 : 191,808,003.15 = 76,811,675.70 : x
  2. Step 2: Convert to fraction form
    127,872,002.10/191,808,003.15 = 76,811,675.70/x
  3. Step 3: Cross multiply
    127,872,002.10x = 191,808,003.15 × 76,811,675.70
  4. Step 4: Simplify right side
    127,872,002.10x = 14,733,094,134,622,380
  5. Step 5: Solve for x
    x = 14,733,094,134,622,380/127,872,002.10
  6. Step 6: Final answer
    x = 115,217,513.55

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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.