Home / 130,520.89-180,104.38-72,376.16

Finding the Fourth Proportional to 130,520.89, 180,104.38 and 72,376.16

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Solution

The fourth proportional to 130,520.89, 180,104.38 and 72,376.16 is: 99,871.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,520.89 : 180,104.38 = 72,376.16 : x
  2. Step 2: Convert to fraction form
    130,520.89/180,104.38 = 72,376.16/x
  3. Step 3: Cross multiply
    130,520.89x = 180,104.38 × 72,376.16
  4. Step 4: Simplify right side
    130,520.89x = 13,035,262,848.66
  5. Step 5: Solve for x
    x = 13,035,262,848.66/130,520.89
  6. Step 6: Final answer
    x = 99,871.09

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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.