Home / 99,666.88-137,538.54-54,345.22

Finding the Fourth Proportional to 99,666.88, 137,538.54 and 54,345.22

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Solution

The fourth proportional to 99,666.88, 137,538.54 and 54,345.22 is: 74,995.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,666.88 : 137,538.54 = 54,345.22 : x
  2. Step 2: Convert to fraction form
    99,666.88/137,538.54 = 54,345.22/x
  3. Step 3: Cross multiply
    99,666.88x = 137,538.54 × 54,345.22
  4. Step 4: Simplify right side
    99,666.88x = 7,474,562,214.78
  5. Step 5: Solve for x
    x = 7,474,562,214.78/99,666.88
  6. Step 6: Final answer
    x = 74,995.45

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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.