Home / 132,972.60-183,501.90-72,543.28

Finding the Fourth Proportional to 132,972.60, 183,501.90 and 72,543.28

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Solution

The fourth proportional to 132,972.60, 183,501.90 and 72,543.28 is: 100,109.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,972.60 : 183,501.90 = 72,543.28 : x
  2. Step 2: Convert to fraction form
    132,972.60/183,501.90 = 72,543.28/x
  3. Step 3: Cross multiply
    132,972.60x = 183,501.90 × 72,543.28
  4. Step 4: Simplify right side
    132,972.60x = 13,311,829,712.23
  5. Step 5: Solve for x
    x = 13,311,829,712.23/132,972.60
  6. Step 6: Final answer
    x = 100,109.57

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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.