Home / 99,639.34-137,499.08-54,316.60

Finding the Fourth Proportional to 99,639.34, 137,499.08 and 54,316.60

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Solution

The fourth proportional to 99,639.34, 137,499.08 and 54,316.60 is: 74,955.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,639.34 : 137,499.08 = 54,316.60 : x
  2. Step 2: Convert to fraction form
    99,639.34/137,499.08 = 54,316.60/x
  3. Step 3: Cross multiply
    99,639.34x = 137,499.08 × 54,316.60
  4. Step 4: Simplify right side
    99,639.34x = 7,468,481,913.40
  5. Step 5: Solve for x
    x = 7,468,481,913.40/99,639.34
  6. Step 6: Final answer
    x = 74,955.15

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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.