Home / 102,639.10-153,958.65-88,642.30

Finding the Fourth Proportional to 102,639.10, 153,958.65 and 88,642.30

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Solution

The fourth proportional to 102,639.10, 153,958.65 and 88,642.30 is: 132,963.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,639.10 : 153,958.65 = 88,642.30 : x
  2. Step 2: Convert to fraction form
    102,639.10/153,958.65 = 88,642.30/x
  3. Step 3: Cross multiply
    102,639.10x = 153,958.65 × 88,642.30
  4. Step 4: Simplify right side
    102,639.10x = 13,647,248,840.90
  5. Step 5: Solve for x
    x = 13,647,248,840.90/102,639.10
  6. Step 6: Final answer
    x = 132,963.45

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1.5x scale

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.