Home / 130,509.29-180,086.77-79,503.52

Finding the Fourth Proportional to 130,509.29, 180,086.77 and 79,503.52

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Solution

The fourth proportional to 130,509.29, 180,086.77 and 79,503.52 is: 109,705.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,509.29 : 180,086.77 = 79,503.52 : x
  2. Step 2: Convert to fraction form
    130,509.29/180,086.77 = 79,503.52/x
  3. Step 3: Cross multiply
    130,509.29x = 180,086.77 × 79,503.52
  4. Step 4: Simplify right side
    130,509.29x = 14,317,531,377.16
  5. Step 5: Solve for x
    x = 14,317,531,377.16/130,509.29
  6. Step 6: Final answer
    x = 109,705.07

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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.