Home / 144,501,478.47-199,412,144.32-78,421,959.64

Finding the Fourth Proportional to 144,501,478.47, 199,412,144.32 and 78,421,959.64

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Solution

The fourth proportional to 144,501,478.47, 199,412,144.32 and 78,421,959.64 is: 108,222,360.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,501,478.47 : 199,412,144.32 = 78,421,959.64 : x
  2. Step 2: Convert to fraction form
    144,501,478.47/199,412,144.32 = 78,421,959.64/x
  3. Step 3: Cross multiply
    144,501,478.47x = 199,412,144.32 × 78,421,959.64
  4. Step 4: Simplify right side
    144,501,478.47x = 15,638,291,133,588,894
  5. Step 5: Solve for x
    x = 15,638,291,133,588,894/144,501,478.47
  6. Step 6: Final answer
    x = 108,222,360.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.