Home / 90,288,097.20-135,432,145.80-67,296,020.40

Finding the Fourth Proportional to 90,288,097.20, 135,432,145.80 and 67,296,020.40

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Solution

The fourth proportional to 90,288,097.20, 135,432,145.80 and 67,296,020.40 is: 100,944,030.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,288,097.20 : 135,432,145.80 = 67,296,020.40 : x
  2. Step 2: Convert to fraction form
    90,288,097.20/135,432,145.80 = 67,296,020.40/x
  3. Step 3: Cross multiply
    90,288,097.20x = 135,432,145.80 × 67,296,020.40
  4. Step 4: Simplify right side
    90,288,097.20x = 9,114,044,446,572,576
  5. Step 5: Solve for x
    x = 9,114,044,446,572,576/90,288,097.20
  6. Step 6: Final answer
    x = 100,944,030.60

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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.