Home / 126,123.10-174,054.08-75,128.87

Finding the Fourth Proportional to 126,123.10, 174,054.08 and 75,128.87

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Solution

The fourth proportional to 126,123.10, 174,054.08 and 75,128.87 is: 103,680.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,123.10 : 174,054.08 = 75,128.87 : x
  2. Step 2: Convert to fraction form
    126,123.10/174,054.08 = 75,128.87/x
  3. Step 3: Cross multiply
    126,123.10x = 174,054.08 × 75,128.87
  4. Step 4: Simplify right side
    126,123.10x = 13,076,486,036.06
  5. Step 5: Solve for x
    x = 13,076,486,036.06/126,123.10
  6. Step 6: Final answer
    x = 103,680.34

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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.