Home / 143,569.08-215,116.66-83,428.74

Finding the Fourth Proportional to 143,569.08, 215,116.66 and 83,428.74

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Solution

The fourth proportional to 143,569.08, 215,116.66 and 83,428.74 is: 125,005.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,569.08 : 215,116.66 = 83,428.74 : x
  2. Step 2: Convert to fraction form
    143,569.08/215,116.66 = 83,428.74/x
  3. Step 3: Cross multiply
    143,569.08x = 215,116.66 × 83,428.74
  4. Step 4: Simplify right side
    143,569.08x = 17,946,911,896.81
  5. Step 5: Solve for x
    x = 17,946,911,896.81/143,569.08
  6. Step 6: Final answer
    x = 125,005.41

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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.