Home / 105,172.10-145,132.08-57,416.22

Finding the Fourth Proportional to 105,172.10, 145,132.08 and 57,416.22

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Solution

The fourth proportional to 105,172.10, 145,132.08 and 57,416.22 is: 79,231.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,172.10 : 145,132.08 = 57,416.22 : x
  2. Step 2: Convert to fraction form
    105,172.10/145,132.08 = 57,416.22/x
  3. Step 3: Cross multiply
    105,172.10x = 145,132.08 × 57,416.22
  4. Step 4: Simplify right side
    105,172.10x = 8,332,935,434.34
  5. Step 5: Solve for x
    x = 8,332,935,434.34/105,172.10
  6. Step 6: Final answer
    x = 79,231.43

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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.