Home / 99,708.42-137,599.26-54,386.40

Finding the Fourth Proportional to 99,708.42, 137,599.26 and 54,386.40

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Solution

The fourth proportional to 99,708.42, 137,599.26 and 54,386.40 is: 75,054.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,708.42 : 137,599.26 = 54,386.40 : x
  2. Step 2: Convert to fraction form
    99,708.42/137,599.26 = 54,386.40/x
  3. Step 3: Cross multiply
    99,708.42x = 137,599.26 × 54,386.40
  4. Step 4: Simplify right side
    99,708.42x = 7,483,528,394.06
  5. Step 5: Solve for x
    x = 7,483,528,394.06/99,708.42
  6. Step 6: Final answer
    x = 75,054.13

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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.