Home / 105,155.07-145,116.09-57,408.60

Finding the Fourth Proportional to 105,155.07, 145,116.09 and 57,408.60

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Solution

The fourth proportional to 105,155.07, 145,116.09 and 57,408.60 is: 79,225.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,155.07 : 145,116.09 = 57,408.60 : x
  2. Step 2: Convert to fraction form
    105,155.07/145,116.09 = 57,408.60/x
  3. Step 3: Cross multiply
    105,155.07x = 145,116.09 × 57,408.60
  4. Step 4: Simplify right side
    105,155.07x = 8,330,911,564.37
  5. Step 5: Solve for x
    x = 8,330,911,564.37/105,155.07
  6. Step 6: Final answer
    x = 79,225.01

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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.