Home / 117,173,140.80-161,708,516.16-64,978,548.48

Finding the Fourth Proportional to 117,173,140.80, 161,708,516.16 and 64,978,548.48

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Solution

The fourth proportional to 117,173,140.80, 161,708,516.16 and 64,978,548.48 is: 89,675,710.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,173,140.80 : 161,708,516.16 = 64,978,548.48 : x
  2. Step 2: Convert to fraction form
    117,173,140.80/161,708,516.16 = 64,978,548.48/x
  3. Step 3: Cross multiply
    117,173,140.80x = 161,708,516.16 × 64,978,548.48
  4. Step 4: Simplify right side
    117,173,140.80x = 10,507,584,656,931,422
  5. Step 5: Solve for x
    x = 10,507,584,656,931,422/117,173,140.80
  6. Step 6: Final answer
    x = 89,675,710.54

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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.