Home / 105,139.24-145,090.02-57,392.44

Finding the Fourth Proportional to 105,139.24, 145,090.02 and 57,392.44

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Solution

The fourth proportional to 105,139.24, 145,090.02 and 57,392.44 is: 79,200.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,139.24 : 145,090.02 = 57,392.44 : x
  2. Step 2: Convert to fraction form
    105,139.24/145,090.02 = 57,392.44/x
  3. Step 3: Cross multiply
    105,139.24x = 145,090.02 × 57,392.44
  4. Step 4: Simplify right side
    105,139.24x = 8,327,070,267.45
  5. Step 5: Solve for x
    x = 8,327,070,267.45/105,139.24
  6. Step 6: Final answer
    x = 79,200.40

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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.