Home / 130,189.34-179,652.80-72,818.72

Finding the Fourth Proportional to 130,189.34, 179,652.80 and 72,818.72

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Solution

The fourth proportional to 130,189.34, 179,652.80 and 72,818.72 is: 100,485.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,189.34 : 179,652.80 = 72,818.72 : x
  2. Step 2: Convert to fraction form
    130,189.34/179,652.80 = 72,818.72/x
  3. Step 3: Cross multiply
    130,189.34x = 179,652.80 × 72,818.72
  4. Step 4: Simplify right side
    130,189.34x = 13,082,085,678.06
  5. Step 5: Solve for x
    x = 13,082,085,678.06/130,189.34
  6. Step 6: Final answer
    x = 100,485.08

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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.