Home / 145,008,029.20-217,512,043.80-87,677,136.40

Finding the Fourth Proportional to 145,008,029.20, 217,512,043.80 and 87,677,136.40

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Solution

The fourth proportional to 145,008,029.20, 217,512,043.80 and 87,677,136.40 is: 131,515,704.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,008,029.20 : 217,512,043.80 = 87,677,136.40 : x
  2. Step 2: Convert to fraction form
    145,008,029.20/217,512,043.80 = 87,677,136.40/x
  3. Step 3: Cross multiply
    145,008,029.20x = 217,512,043.80 × 87,677,136.40
  4. Step 4: Simplify right side
    145,008,029.20x = 19,070,833,132,895,376
  5. Step 5: Solve for x
    x = 19,070,833,132,895,376/145,008,029.20
  6. Step 6: Final answer
    x = 131,515,704.60

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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.