Home / 131,478,940.78-181,424,988.77-75,742,405.16

Finding the Fourth Proportional to 131,478,940.78, 181,424,988.77 and 75,742,405.16

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Solution

The fourth proportional to 131,478,940.78, 181,424,988.77 and 75,742,405.16 is: 104,515,330.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,478,940.78 : 181,424,988.77 = 75,742,405.16 : x
  2. Step 2: Convert to fraction form
    131,478,940.78/181,424,988.77 = 75,742,405.16/x
  3. Step 3: Cross multiply
    131,478,940.78x = 181,424,988.77 × 75,742,405.16
  4. Step 4: Simplify right side
    131,478,940.78x = 13,741,565,004,279,952
  5. Step 5: Solve for x
    x = 13,741,565,004,279,952/131,478,940.78
  6. Step 6: Final answer
    x = 104,515,330.92

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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.