Home / 127,712,445.20-191,568,667.80-76,652,118.80

Finding the Fourth Proportional to 127,712,445.20, 191,568,667.80 and 76,652,118.80

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Solution

The fourth proportional to 127,712,445.20, 191,568,667.80 and 76,652,118.80 is: 114,978,178.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,712,445.20 : 191,568,667.80 = 76,652,118.80 : x
  2. Step 2: Convert to fraction form
    127,712,445.20/191,568,667.80 = 76,652,118.80/x
  3. Step 3: Cross multiply
    127,712,445.20x = 191,568,667.80 × 76,652,118.80
  4. Step 4: Simplify right side
    127,712,445.20x = 14,684,144,282,563,334
  5. Step 5: Solve for x
    x = 14,684,144,282,563,334/127,712,445.20
  6. Step 6: Final answer
    x = 114,978,178.20

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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.