Home / 219,166.29-328,758.81-86,075.40

Finding the Fourth Proportional to 219,166.29, 328,758.81 and 86,075.40

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Solution

The fourth proportional to 219,166.29, 328,758.81 and 86,075.40 is: 129,116.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,166.29 : 328,758.81 = 86,075.40 : x
  2. Step 2: Convert to fraction form
    219,166.29/328,758.81 = 86,075.40/x
  3. Step 3: Cross multiply
    219,166.29x = 328,758.81 × 86,075.40
  4. Step 4: Simplify right side
    219,166.29x = 28,298,046,074.27
  5. Step 5: Solve for x
    x = 28,298,046,074.27/219,166.29
  6. Step 6: Final answer
    x = 129,116.78

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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.