Home / 99,509.18-137,089.04-69,242.54

Finding the Fourth Proportional to 99,509.18, 137,089.04 and 69,242.54

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Solution

The fourth proportional to 99,509.18, 137,089.04 and 69,242.54 is: 95,392.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,509.18 : 137,089.04 = 69,242.54 : x
  2. Step 2: Convert to fraction form
    99,509.18/137,089.04 = 69,242.54/x
  3. Step 3: Cross multiply
    99,509.18x = 137,089.04 × 69,242.54
  4. Step 4: Simplify right side
    99,509.18x = 9,492,392,304.10
  5. Step 5: Solve for x
    x = 9,492,392,304.10/99,509.18
  6. Step 6: Final answer
    x = 95,392.13

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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.