Home / 130,731.30-180,403.74-74,153.34

Finding the Fourth Proportional to 130,731.30, 180,403.74 and 74,153.34

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Solution

The fourth proportional to 130,731.30, 180,403.74 and 74,153.34 is: 102,328.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,731.30 : 180,403.74 = 74,153.34 : x
  2. Step 2: Convert to fraction form
    130,731.30/180,403.74 = 74,153.34/x
  3. Step 3: Cross multiply
    130,731.30x = 180,403.74 × 74,153.34
  4. Step 4: Simplify right side
    130,731.30x = 13,377,539,869.49
  5. Step 5: Solve for x
    x = 13,377,539,869.49/130,731.30
  6. Step 6: Final answer
    x = 102,328.52

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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.