Home / 109,931.90-164,569.80-103,443.80

Finding the Fourth Proportional to 109,931.90, 164,569.80 and 103,443.80

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Solution

The fourth proportional to 109,931.90, 164,569.80 and 103,443.80 is: 154,857.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,931.90 : 164,569.80 = 103,443.80 : x
  2. Step 2: Convert to fraction form
    109,931.90/164,569.80 = 103,443.80/x
  3. Step 3: Cross multiply
    109,931.90x = 164,569.80 × 103,443.80
  4. Step 4: Simplify right side
    109,931.90x = 17,023,725,477.24
  5. Step 5: Solve for x
    x = 17,023,725,477.24/109,931.90
  6. Step 6: Final answer
    x = 154,857.01

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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.