Home / 105,210.54-145,185.21-57,454.74

Finding the Fourth Proportional to 105,210.54, 145,185.21 and 57,454.74

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Solution

The fourth proportional to 105,210.54, 145,185.21 and 57,454.74 is: 79,284.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,210.54 : 145,185.21 = 57,454.74 : x
  2. Step 2: Convert to fraction form
    105,210.54/145,185.21 = 57,454.74/x
  3. Step 3: Cross multiply
    105,210.54x = 145,185.21 × 57,454.74
  4. Step 4: Simplify right side
    105,210.54x = 8,341,578,492.40
  5. Step 5: Solve for x
    x = 8,341,578,492.40/105,210.54
  6. Step 6: Final answer
    x = 79,284.63

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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.