Home / 130,489.61-180,088.35-73,138.70

Finding the Fourth Proportional to 130,489.61, 180,088.35 and 73,138.70

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Solution

The fourth proportional to 130,489.61, 180,088.35 and 73,138.70 is: 100,938.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,489.61 : 180,088.35 = 73,138.70 : x
  2. Step 2: Convert to fraction form
    130,489.61/180,088.35 = 73,138.70/x
  3. Step 3: Cross multiply
    130,489.61x = 180,088.35 × 73,138.70
  4. Step 4: Simplify right side
    130,489.61x = 13,171,427,804.15
  5. Step 5: Solve for x
    x = 13,171,427,804.15/130,489.61
  6. Step 6: Final answer
    x = 100,938.52

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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.