Home / 128,087.51-176,798.30-74,396.66

Finding the Fourth Proportional to 128,087.51, 176,798.30 and 74,396.66

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Solution

The fourth proportional to 128,087.51, 176,798.30 and 74,396.66 is: 102,689.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,087.51 : 176,798.30 = 74,396.66 : x
  2. Step 2: Convert to fraction form
    128,087.51/176,798.30 = 74,396.66/x
  3. Step 3: Cross multiply
    128,087.51x = 176,798.30 × 74,396.66
  4. Step 4: Simplify right side
    128,087.51x = 13,153,203,013.68
  5. Step 5: Solve for x
    x = 13,153,203,013.68/128,087.51
  6. Step 6: Final answer
    x = 102,689.19

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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.