Home / 103,689.64-143,083.56-61,240.24

Finding the Fourth Proportional to 103,689.64, 143,083.56 and 61,240.24

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Solution

The fourth proportional to 103,689.64, 143,083.56 and 61,240.24 is: 84,506.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,689.64 : 143,083.56 = 61,240.24 : x
  2. Step 2: Convert to fraction form
    103,689.64/143,083.56 = 61,240.24/x
  3. Step 3: Cross multiply
    103,689.64x = 143,083.56 × 61,240.24
  4. Step 4: Simplify right side
    103,689.64x = 8,762,471,554.45
  5. Step 5: Solve for x
    x = 8,762,471,554.45/103,689.64
  6. Step 6: Final answer
    x = 84,506.72

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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.