Home / 99,304.50-137,157.21-65,712.18

Finding the Fourth Proportional to 99,304.50, 137,157.21 and 65,712.18

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Solution

The fourth proportional to 99,304.50, 137,157.21 and 65,712.18 is: 90,760.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,304.50 : 137,157.21 = 65,712.18 : x
  2. Step 2: Convert to fraction form
    99,304.50/137,157.21 = 65,712.18/x
  3. Step 3: Cross multiply
    99,304.50x = 137,157.21 × 65,712.18
  4. Step 4: Simplify right side
    99,304.50x = 9,012,899,271.82
  5. Step 5: Solve for x
    x = 9,012,899,271.82/99,304.50
  6. Step 6: Final answer
    x = 90,760.23

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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.