Home / 156,075.21-215,384.78-91,531.29

Finding the Fourth Proportional to 156,075.21, 215,384.78 and 91,531.29

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Solution

The fourth proportional to 156,075.21, 215,384.78 and 91,531.29 is: 126,313.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,075.21 : 215,384.78 = 91,531.29 : x
  2. Step 2: Convert to fraction form
    156,075.21/215,384.78 = 91,531.29/x
  3. Step 3: Cross multiply
    156,075.21x = 215,384.78 × 91,531.29
  4. Step 4: Simplify right side
    156,075.21x = 19,714,446,180.90
  5. Step 5: Solve for x
    x = 19,714,446,180.90/156,075.21
  6. Step 6: Final answer
    x = 126,313.76

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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.