Home / 132,859,680.40-199,373,501.40-78,272,160.40

Finding the Fourth Proportional to 132,859,680.40, 199,373,501.40 and 78,272,160.40

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Solution

The fourth proportional to 132,859,680.40, 199,373,501.40 and 78,272,160.40 is: 117,457,716.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,859,680.40 : 199,373,501.40 = 78,272,160.40 : x
  2. Step 2: Convert to fraction form
    132,859,680.40/199,373,501.40 = 78,272,160.40/x
  3. Step 3: Cross multiply
    132,859,680.40x = 199,373,501.40 × 78,272,160.40
  4. Step 4: Simplify right side
    132,859,680.40x = 15,605,394,681,090,426
  5. Step 5: Solve for x
    x = 15,605,394,681,090,426/132,859,680.40
  6. Step 6: Final answer
    x = 117,457,716.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.