Home / 123,328.51-170,130.61-74,917.58

Finding the Fourth Proportional to 123,328.51, 170,130.61 and 74,917.58

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Solution

The fourth proportional to 123,328.51, 170,130.61 and 74,917.58 is: 103,348.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,328.51 : 170,130.61 = 74,917.58 : x
  2. Step 2: Convert to fraction form
    123,328.51/170,130.61 = 74,917.58/x
  3. Step 3: Cross multiply
    123,328.51x = 170,130.61 × 74,917.58
  4. Step 4: Simplify right side
    123,328.51x = 12,745,772,828.12
  5. Step 5: Solve for x
    x = 12,745,772,828.12/123,328.51
  6. Step 6: Final answer
    x = 103,348.15

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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.