Home / 138,742.05-208,118.90-43,970.16

Finding the Fourth Proportional to 138,742.05, 208,118.90 and 43,970.16

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Solution

The fourth proportional to 138,742.05, 208,118.90 and 43,970.16 is: 65,957.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,742.05 : 208,118.90 = 43,970.16 : x
  2. Step 2: Convert to fraction form
    138,742.05/208,118.90 = 43,970.16/x
  3. Step 3: Cross multiply
    138,742.05x = 208,118.90 × 43,970.16
  4. Step 4: Simplify right side
    138,742.05x = 9,151,021,112.17
  5. Step 5: Solve for x
    x = 9,151,021,112.17/138,742.05
  6. Step 6: Final answer
    x = 65,957.08

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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.