Home / 97,089.12-145,530-69,302.88

Finding the Fourth Proportional to 97,089.12, 145,530 and 69,302.88

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Solution

The fourth proportional to 97,089.12, 145,530 and 69,302.88 is: 103,880.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,089.12 : 145,530 = 69,302.88 : x
  2. Step 2: Convert to fraction form
    97,089.12/145,530 = 69,302.88/x
  3. Step 3: Cross multiply
    97,089.12x = 145,530 × 69,302.88
  4. Step 4: Simplify right side
    97,089.12x = 10,085,648,126.40
  5. Step 5: Solve for x
    x = 10,085,648,126.40/97,089.12
  6. Step 6: Final answer
    x = 103,880.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.