Home / 130,511.29-180,089.53-79,505.52

Finding the Fourth Proportional to 130,511.29, 180,089.53 and 79,505.52

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Solution

The fourth proportional to 130,511.29, 180,089.53 and 79,505.52 is: 109,707.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,511.29 : 180,089.53 = 79,505.52 : x
  2. Step 2: Convert to fraction form
    130,511.29/180,089.53 = 79,505.52/x
  3. Step 3: Cross multiply
    130,511.29x = 180,089.53 × 79,505.52
  4. Step 4: Simplify right side
    130,511.29x = 14,318,111,729.21
  5. Step 5: Solve for x
    x = 14,318,111,729.21/130,511.29
  6. Step 6: Final answer
    x = 109,707.84

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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.