Home / 130,101.32-179,539.11-72,740.63

Finding the Fourth Proportional to 130,101.32, 179,539.11 and 72,740.63

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Solution

The fourth proportional to 130,101.32, 179,539.11 and 72,740.63 is: 100,381.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,101.32 : 179,539.11 = 72,740.63 : x
  2. Step 2: Convert to fraction form
    130,101.32/179,539.11 = 72,740.63/x
  3. Step 3: Cross multiply
    130,101.32x = 179,539.11 × 72,740.63
  4. Step 4: Simplify right side
    130,101.32x = 13,059,787,073.34
  5. Step 5: Solve for x
    x = 13,059,787,073.34/130,101.32
  6. Step 6: Final answer
    x = 100,381.67

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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.