Home / 130,750.96-180,434.64-77,038.24

Finding the Fourth Proportional to 130,750.96, 180,434.64 and 77,038.24

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Solution

The fourth proportional to 130,750.96, 180,434.64 and 77,038.24 is: 106,311.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,750.96 : 180,434.64 = 77,038.24 : x
  2. Step 2: Convert to fraction form
    130,750.96/180,434.64 = 77,038.24/x
  3. Step 3: Cross multiply
    130,750.96x = 180,434.64 × 77,038.24
  4. Step 4: Simplify right side
    130,750.96x = 13,900,367,100.63
  5. Step 5: Solve for x
    x = 13,900,367,100.63/130,750.96
  6. Step 6: Final answer
    x = 106,311.78

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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.