Home / 128,015.16-176,663.34-74,304.60

Finding the Fourth Proportional to 128,015.16, 176,663.34 and 74,304.60

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Solution

The fourth proportional to 128,015.16, 176,663.34 and 74,304.60 is: 102,541.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,015.16 : 176,663.34 = 74,304.60 : x
  2. Step 2: Convert to fraction form
    128,015.16/176,663.34 = 74,304.60/x
  3. Step 3: Cross multiply
    128,015.16x = 176,663.34 × 74,304.60
  4. Step 4: Simplify right side
    128,015.16x = 13,126,898,813.36
  5. Step 5: Solve for x
    x = 13,126,898,813.36/128,015.16
  6. Step 6: Final answer
    x = 102,541.75

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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.