Home / 99,540.68-137,342.58-56,510.84

Finding the Fourth Proportional to 99,540.68, 137,342.58 and 56,510.84

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Solution

The fourth proportional to 99,540.68, 137,342.58 and 56,510.84 is: 77,971.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,540.68 : 137,342.58 = 56,510.84 : x
  2. Step 2: Convert to fraction form
    99,540.68/137,342.58 = 56,510.84/x
  3. Step 3: Cross multiply
    99,540.68x = 137,342.58 × 56,510.84
  4. Step 4: Simplify right side
    99,540.68x = 7,761,344,563.57
  5. Step 5: Solve for x
    x = 7,761,344,563.57/99,540.68
  6. Step 6: Final answer
    x = 77,971.58

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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.