Home / 100,879,938.70-151,001,043.45-72,182,124.70

Finding the Fourth Proportional to 100,879,938.70, 151,001,043.45 and 72,182,124.70

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Solution

The fourth proportional to 100,879,938.70, 151,001,043.45 and 72,182,124.70 is: 108,045,031.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,879,938.70 : 151,001,043.45 = 72,182,124.70 : x
  2. Step 2: Convert to fraction form
    100,879,938.70/151,001,043.45 = 72,182,124.70/x
  3. Step 3: Cross multiply
    100,879,938.70x = 151,001,043.45 × 72,182,124.70
  4. Step 4: Simplify right side
    100,879,938.70x = 10,899,576,148,138,018
  5. Step 5: Solve for x
    x = 10,899,576,148,138,018/100,879,938.70
  6. Step 6: Final answer
    x = 108,045,031.44

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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.