Home / 123,532.45-170,346.57-105,686.53

Finding the Fourth Proportional to 123,532.45, 170,346.57 and 105,686.53

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Solution

The fourth proportional to 123,532.45, 170,346.57 and 105,686.53 is: 145,737.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,532.45 : 170,346.57 = 105,686.53 : x
  2. Step 2: Convert to fraction form
    123,532.45/170,346.57 = 105,686.53/x
  3. Step 3: Cross multiply
    123,532.45x = 170,346.57 × 105,686.53
  4. Step 4: Simplify right side
    123,532.45x = 18,003,337,880.70
  5. Step 5: Solve for x
    x = 18,003,337,880.70/123,532.45
  6. Step 6: Final answer
    x = 145,737.72

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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.