Home / 106,705.65-147,082.74-72,239.51

Finding the Fourth Proportional to 106,705.65, 147,082.74 and 72,239.51

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Solution

The fourth proportional to 106,705.65, 147,082.74 and 72,239.51 is: 99,574.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,705.65 : 147,082.74 = 72,239.51 : x
  2. Step 2: Convert to fraction form
    106,705.65/147,082.74 = 72,239.51/x
  3. Step 3: Cross multiply
    106,705.65x = 147,082.74 × 72,239.51
  4. Step 4: Simplify right side
    106,705.65x = 10,625,185,163.87
  5. Step 5: Solve for x
    x = 10,625,185,163.87/106,705.65
  6. Step 6: Final answer
    x = 99,574.72

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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.