Home / 99,405.37-137,127.13-59,090.45

Finding the Fourth Proportional to 99,405.37, 137,127.13 and 59,090.45

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Solution

The fourth proportional to 99,405.37, 137,127.13 and 59,090.45 is: 81,513.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,405.37 : 137,127.13 = 59,090.45 : x
  2. Step 2: Convert to fraction form
    99,405.37/137,127.13 = 59,090.45/x
  3. Step 3: Cross multiply
    99,405.37x = 137,127.13 × 59,090.45
  4. Step 4: Simplify right side
    99,405.37x = 8,102,903,818.91
  5. Step 5: Solve for x
    x = 8,102,903,818.91/99,405.37
  6. Step 6: Final answer
    x = 81,513.74

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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.