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Finding the Fourth Proportional to 130,459.43, 180,030.78 and 73,101.11

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Solution

The fourth proportional to 130,459.43, 180,030.78 and 73,101.11 is: 100,877.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,459.43 : 180,030.78 = 73,101.11 : x
  2. Step 2: Convert to fraction form
    130,459.43/180,030.78 = 73,101.11/x
  3. Step 3: Cross multiply
    130,459.43x = 180,030.78 × 73,101.11
  4. Step 4: Simplify right side
    130,459.43x = 13,160,449,852.17
  5. Step 5: Solve for x
    x = 13,160,449,852.17/130,459.43
  6. Step 6: Final answer
    x = 100,877.72

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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.