Home / 105,290.35-145,300.69-57,543.68

Finding the Fourth Proportional to 105,290.35, 145,300.69 and 57,543.68

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Solution

The fourth proportional to 105,290.35, 145,300.69 and 57,543.68 is: 79,410.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,290.35 : 145,300.69 = 57,543.68 : x
  2. Step 2: Convert to fraction form
    105,290.35/145,300.69 = 57,543.68/x
  3. Step 3: Cross multiply
    105,290.35x = 145,300.69 × 57,543.68
  4. Step 4: Simplify right side
    105,290.35x = 8,361,136,409.14
  5. Step 5: Solve for x
    x = 8,361,136,409.14/105,290.35
  6. Step 6: Final answer
    x = 79,410.29

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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.