Home / 103,703.48-142,809.44-90,085.29

Finding the Fourth Proportional to 103,703.48, 142,809.44 and 90,085.29

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Solution

The fourth proportional to 103,703.48, 142,809.44 and 90,085.29 is: 124,055.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,703.48 : 142,809.44 = 90,085.29 : x
  2. Step 2: Convert to fraction form
    103,703.48/142,809.44 = 90,085.29/x
  3. Step 3: Cross multiply
    103,703.48x = 142,809.44 × 90,085.29
  4. Step 4: Simplify right side
    103,703.48x = 12,865,029,817.14
  5. Step 5: Solve for x
    x = 12,865,029,817.14/103,703.48
  6. Step 6: Final answer
    x = 124,055.91

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1.5x scale

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.