Home / 130,790.36-180,484.54-72,650.87

Finding the Fourth Proportional to 130,790.36, 180,484.54 and 72,650.87

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Solution

The fourth proportional to 130,790.36, 180,484.54 and 72,650.87 is: 100,254.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,790.36 : 180,484.54 = 72,650.87 : x
  2. Step 2: Convert to fraction form
    130,790.36/180,484.54 = 72,650.87/x
  3. Step 3: Cross multiply
    130,790.36x = 180,484.54 × 72,650.87
  4. Step 4: Simplify right side
    130,790.36x = 13,112,357,768.50
  5. Step 5: Solve for x
    x = 13,112,357,768.50/130,790.36
  6. Step 6: Final answer
    x = 100,254.77

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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.