Home / 143,530.47-215,223.35-43,671.51

Finding the Fourth Proportional to 143,530.47, 215,223.35 and 43,671.51

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Solution

The fourth proportional to 143,530.47, 215,223.35 and 43,671.51 is: 65,485.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,530.47 : 215,223.35 = 43,671.51 : x
  2. Step 2: Convert to fraction form
    143,530.47/215,223.35 = 43,671.51/x
  3. Step 3: Cross multiply
    143,530.47x = 215,223.35 × 43,671.51
  4. Step 4: Simplify right side
    143,530.47x = 9,399,128,463.40
  5. Step 5: Solve for x
    x = 9,399,128,463.40/143,530.47
  6. Step 6: Final answer
    x = 65,485.25

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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.