Home / 110,020.20-165,095.10-72,688.20

Finding the Fourth Proportional to 110,020.20, 165,095.10 and 72,688.20

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Solution

The fourth proportional to 110,020.20, 165,095.10 and 72,688.20 is: 109,075.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,020.20 : 165,095.10 = 72,688.20 : x
  2. Step 2: Convert to fraction form
    110,020.20/165,095.10 = 72,688.20/x
  3. Step 3: Cross multiply
    110,020.20x = 165,095.10 × 72,688.20
  4. Step 4: Simplify right side
    110,020.20x = 12,000,465,647.82
  5. Step 5: Solve for x
    x = 12,000,465,647.82/110,020.20
  6. Step 6: Final answer
    x = 109,075.11

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1.5x scale

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.