Home / 128,309,990.10-192,463,235.55-42,051,210.90

Finding the Fourth Proportional to 128,309,990.10, 192,463,235.55 and 42,051,210.90

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Solution

The fourth proportional to 128,309,990.10, 192,463,235.55 and 42,051,210.90 is: 63,076,242.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,309,990.10 : 192,463,235.55 = 42,051,210.90 : x
  2. Step 2: Convert to fraction form
    128,309,990.10/192,463,235.55 = 42,051,210.90/x
  3. Step 3: Cross multiply
    128,309,990.10x = 192,463,235.55 × 42,051,210.90
  4. Step 4: Simplify right side
    128,309,990.10x = 8,093,312,108,609,428
  5. Step 5: Solve for x
    x = 8,093,312,108,609,428/128,309,990.10
  6. Step 6: Final answer
    x = 63,076,242.95

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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.