Home / 99,581.28-137,420.43-54,259.63

Finding the Fourth Proportional to 99,581.28, 137,420.43 and 54,259.63

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Solution

The fourth proportional to 99,581.28, 137,420.43 and 54,259.63 is: 74,877.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,581.28 : 137,420.43 = 54,259.63 : x
  2. Step 2: Convert to fraction form
    99,581.28/137,420.43 = 54,259.63/x
  3. Step 3: Cross multiply
    99,581.28x = 137,420.43 × 54,259.63
  4. Step 4: Simplify right side
    99,581.28x = 7,456,381,686.24
  5. Step 5: Solve for x
    x = 7,456,381,686.24/99,581.28
  6. Step 6: Final answer
    x = 74,877.34

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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.