Home / 170,720,554.86-256,081,017.02-79,907,916.78

Finding the Fourth Proportional to 170,720,554.86, 256,081,017.02 and 79,907,916.78

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Solution

The fourth proportional to 170,720,554.86, 256,081,017.02 and 79,907,916.78 is: 119,861,961.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,720,554.86 : 256,081,017.02 = 79,907,916.78 : x
  2. Step 2: Convert to fraction form
    170,720,554.86/256,081,017.02 = 79,907,916.78/x
  3. Step 3: Cross multiply
    170,720,554.86x = 256,081,017.02 × 79,907,916.78
  4. Step 4: Simplify right side
    170,720,554.86x = 20,462,900,596,572,384
  5. Step 5: Solve for x
    x = 20,462,900,596,572,384/170,720,554.86
  6. Step 6: Final answer
    x = 119,861,961.63

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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.