Home / 109,613.90-164,420.85-103,490.30

Finding the Fourth Proportional to 109,613.90, 164,420.85 and 103,490.30

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Solution

The fourth proportional to 109,613.90, 164,420.85 and 103,490.30 is: 155,235.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,613.90 : 164,420.85 = 103,490.30 : x
  2. Step 2: Convert to fraction form
    109,613.90/164,420.85 = 103,490.30/x
  3. Step 3: Cross multiply
    109,613.90x = 164,420.85 × 103,490.30
  4. Step 4: Simplify right side
    109,613.90x = 17,015,963,092.76
  5. Step 5: Solve for x
    x = 17,015,963,092.76/109,613.90
  6. Step 6: Final answer
    x = 155,235.45

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1.5x scale

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.