Home / 147,643.72-203,746.56-83,981.36

Finding the Fourth Proportional to 147,643.72, 203,746.56 and 83,981.36

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Solution

The fourth proportional to 147,643.72, 203,746.56 and 83,981.36 is: 115,893.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,643.72 : 203,746.56 = 83,981.36 : x
  2. Step 2: Convert to fraction form
    147,643.72/203,746.56 = 83,981.36/x
  3. Step 3: Cross multiply
    147,643.72x = 203,746.56 × 83,981.36
  4. Step 4: Simplify right side
    147,643.72x = 17,110,913,398.56
  5. Step 5: Solve for x
    x = 17,110,913,398.56/147,643.72
  6. Step 6: Final answer
    x = 115,893.27

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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.