Home / 205,343,218.72-307,807,566.04-128,720,055.32

Finding the Fourth Proportional to 205,343,218.72, 307,807,566.04 and 128,720,055.32

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Solution

The fourth proportional to 205,343,218.72, 307,807,566.04 and 128,720,055.32 is: 192,950,160.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,343,218.72 : 307,807,566.04 = 128,720,055.32 : x
  2. Step 2: Convert to fraction form
    205,343,218.72/307,807,566.04 = 128,720,055.32/x
  3. Step 3: Cross multiply
    205,343,218.72x = 307,807,566.04 × 128,720,055.32
  4. Step 4: Simplify right side
    205,343,218.72x = 39,621,006,928,583,352
  5. Step 5: Solve for x
    x = 39,621,006,928,583,352/205,343,218.72
  6. Step 6: Final answer
    x = 192,950,160.11

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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.