Home / 101,290,812.72-139,788,179.64-57,222,527.28

Finding the Fourth Proportional to 101,290,812.72, 139,788,179.64 and 57,222,527.28

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Solution

The fourth proportional to 101,290,812.72, 139,788,179.64 and 57,222,527.28 is: 78,970,962.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,290,812.72 : 139,788,179.64 = 57,222,527.28 : x
  2. Step 2: Convert to fraction form
    101,290,812.72/139,788,179.64 = 57,222,527.28/x
  3. Step 3: Cross multiply
    101,290,812.72x = 139,788,179.64 × 57,222,527.28
  4. Step 4: Simplify right side
    101,290,812.72x = 7,999,032,922,871,440
  5. Step 5: Solve for x
    x = 7,999,032,922,871,440/101,290,812.72
  6. Step 6: Final answer
    x = 78,970,962.01

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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.