Home / 105,155.28-145,114.56-57,409.02

Finding the Fourth Proportional to 105,155.28, 145,114.56 and 57,409.02

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Solution

The fourth proportional to 105,155.28, 145,114.56 and 57,409.02 is: 79,224.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,155.28 : 145,114.56 = 57,409.02 : x
  2. Step 2: Convert to fraction form
    105,155.28/145,114.56 = 57,409.02/x
  3. Step 3: Cross multiply
    105,155.28x = 145,114.56 × 57,409.02
  4. Step 4: Simplify right side
    105,155.28x = 8,330,884,677.33
  5. Step 5: Solve for x
    x = 8,330,884,677.33/105,155.28
  6. Step 6: Final answer
    x = 79,224.60

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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.