Home / 105,172.60-145,132.77-57,416.73

Finding the Fourth Proportional to 105,172.60, 145,132.77 and 57,416.73

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Solution

The fourth proportional to 105,172.60, 145,132.77 and 57,416.73 is: 79,232.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,172.60 : 145,132.77 = 57,416.73 : x
  2. Step 2: Convert to fraction form
    105,172.60/145,132.77 = 57,416.73/x
  3. Step 3: Cross multiply
    105,172.60x = 145,132.77 × 57,416.73
  4. Step 4: Simplify right side
    105,172.60x = 8,333,049,069.24
  5. Step 5: Solve for x
    x = 8,333,049,069.24/105,172.60
  6. Step 6: Final answer
    x = 79,232.13

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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.