Home / 130,938.40-180,695.22-74,349.76

Finding the Fourth Proportional to 130,938.40, 180,695.22 and 74,349.76

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Solution

The fourth proportional to 130,938.40, 180,695.22 and 74,349.76 is: 102,602.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,938.40 : 180,695.22 = 74,349.76 : x
  2. Step 2: Convert to fraction form
    130,938.40/180,695.22 = 74,349.76/x
  3. Step 3: Cross multiply
    130,938.40x = 180,695.22 × 74,349.76
  4. Step 4: Simplify right side
    130,938.40x = 13,434,646,240.15
  5. Step 5: Solve for x
    x = 13,434,646,240.15/130,938.40
  6. Step 6: Final answer
    x = 102,602.80

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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.