Home / 115,066.60-172,378.77-70,563.58

Finding the Fourth Proportional to 115,066.60, 172,378.77 and 70,563.58

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Solution

The fourth proportional to 115,066.60, 172,378.77 and 70,563.58 is: 105,709.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,066.60 : 172,378.77 = 70,563.58 : x
  2. Step 2: Convert to fraction form
    115,066.60/172,378.77 = 70,563.58/x
  3. Step 3: Cross multiply
    115,066.60x = 172,378.77 × 70,563.58
  4. Step 4: Simplify right side
    115,066.60x = 12,163,663,127.20
  5. Step 5: Solve for x
    x = 12,163,663,127.20/115,066.60
  6. Step 6: Final answer
    x = 105,709.76

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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.