Home / 123,281.86-170,008.08-74,890.84

Finding the Fourth Proportional to 123,281.86, 170,008.08 and 74,890.84

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Solution

The fourth proportional to 123,281.86, 170,008.08 and 74,890.84 is: 103,275.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,281.86 : 170,008.08 = 74,890.84 : x
  2. Step 2: Convert to fraction form
    123,281.86/170,008.08 = 74,890.84/x
  3. Step 3: Cross multiply
    123,281.86x = 170,008.08 × 74,890.84
  4. Step 4: Simplify right side
    123,281.86x = 12,732,047,917.99
  5. Step 5: Solve for x
    x = 12,732,047,917.99/123,281.86
  6. Step 6: Final answer
    x = 103,275.92

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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.