Home / 106,639.66-147,140.10-63,607.72

Finding the Fourth Proportional to 106,639.66, 147,140.10 and 63,607.72

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Solution

The fourth proportional to 106,639.66, 147,140.10 and 63,607.72 is: 87,765.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,639.66 : 147,140.10 = 63,607.72 : x
  2. Step 2: Convert to fraction form
    106,639.66/147,140.10 = 63,607.72/x
  3. Step 3: Cross multiply
    106,639.66x = 147,140.10 × 63,607.72
  4. Step 4: Simplify right side
    106,639.66x = 9,359,246,281.57
  5. Step 5: Solve for x
    x = 9,359,246,281.57/106,639.66
  6. Step 6: Final answer
    x = 87,765.15

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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.