Home / 156,075.30-215,385.21-91,583.10

Finding the Fourth Proportional to 156,075.30, 215,385.21 and 91,583.10

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Solution

The fourth proportional to 156,075.30, 215,385.21 and 91,583.10 is: 126,385.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,075.30 : 215,385.21 = 91,583.10 : x
  2. Step 2: Convert to fraction form
    156,075.30/215,385.21 = 91,583.10/x
  3. Step 3: Cross multiply
    156,075.30x = 215,385.21 × 91,583.10
  4. Step 4: Simplify right side
    156,075.30x = 19,725,645,225.95
  5. Step 5: Solve for x
    x = 19,725,645,225.95/156,075.30
  6. Step 6: Final answer
    x = 126,385.44

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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.