Home / 130,931.56-180,663.78-74,322.28

Finding the Fourth Proportional to 130,931.56, 180,663.78 and 74,322.28

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Solution

The fourth proportional to 130,931.56, 180,663.78 and 74,322.28 is: 102,552.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,931.56 : 180,663.78 = 74,322.28 : x
  2. Step 2: Convert to fraction form
    130,931.56/180,663.78 = 74,322.28/x
  3. Step 3: Cross multiply
    130,931.56x = 180,663.78 × 74,322.28
  4. Step 4: Simplify right side
    130,931.56x = 13,427,344,043.02
  5. Step 5: Solve for x
    x = 13,427,344,043.02/130,931.56
  6. Step 6: Final answer
    x = 102,552.39

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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.