Home / 105,151.68-145,111.51-57,407.04

Finding the Fourth Proportional to 105,151.68, 145,111.51 and 57,407.04

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Solution

The fourth proportional to 105,151.68, 145,111.51 and 57,407.04 is: 79,222.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,151.68 : 145,111.51 = 57,407.04 : x
  2. Step 2: Convert to fraction form
    105,151.68/145,111.51 = 57,407.04/x
  3. Step 3: Cross multiply
    105,151.68x = 145,111.51 × 57,407.04
  4. Step 4: Simplify right side
    105,151.68x = 8,330,422,259.03
  5. Step 5: Solve for x
    x = 8,330,422,259.03/105,151.68
  6. Step 6: Final answer
    x = 79,222.91

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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.