Home / 103,012.10-155,220.05-84,702.29

Finding the Fourth Proportional to 103,012.10, 155,220.05 and 84,702.29

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Solution

The fourth proportional to 103,012.10, 155,220.05 and 84,702.29 is: 127,630.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,012.10 : 155,220.05 = 84,702.29 : x
  2. Step 2: Convert to fraction form
    103,012.10/155,220.05 = 84,702.29/x
  3. Step 3: Cross multiply
    103,012.10x = 155,220.05 × 84,702.29
  4. Step 4: Simplify right side
    103,012.10x = 13,147,492,489.30
  5. Step 5: Solve for x
    x = 13,147,492,489.30/103,012.10
  6. Step 6: Final answer
    x = 127,630.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.