Home / 103,764.15-155,646.23-66,366.45

Finding the Fourth Proportional to 103,764.15, 155,646.23 and 66,366.45

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Solution

The fourth proportional to 103,764.15, 155,646.23 and 66,366.45 is: 99,549.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,764.15 : 155,646.23 = 66,366.45 : x
  2. Step 2: Convert to fraction form
    103,764.15/155,646.23 = 66,366.45/x
  3. Step 3: Cross multiply
    103,764.15x = 155,646.23 × 66,366.45
  4. Step 4: Simplify right side
    103,764.15x = 10,329,687,409.15
  5. Step 5: Solve for x
    x = 10,329,687,409.15/103,764.15
  6. Step 6: Final answer
    x = 99,549.68

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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.