Home / 130,646.52-180,288.72-74,057.76

Finding the Fourth Proportional to 130,646.52, 180,288.72 and 74,057.76

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Solution

The fourth proportional to 130,646.52, 180,288.72 and 74,057.76 is: 102,197.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,646.52 : 180,288.72 = 74,057.76 : x
  2. Step 2: Convert to fraction form
    130,646.52/180,288.72 = 74,057.76/x
  3. Step 3: Cross multiply
    130,646.52x = 180,288.72 × 74,057.76
  4. Step 4: Simplify right side
    130,646.52x = 13,351,778,756.47
  5. Step 5: Solve for x
    x = 13,351,778,756.47/130,646.52
  6. Step 6: Final answer
    x = 102,197.74

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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.