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Finding the Fourth Proportional to 115,957.60, 159,950.76 and 76,666.44

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Solution

The fourth proportional to 115,957.60, 159,950.76 and 76,666.44 is: 105,752.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,957.60 : 159,950.76 = 76,666.44 : x
  2. Step 2: Convert to fraction form
    115,957.60/159,950.76 = 76,666.44/x
  3. Step 3: Cross multiply
    115,957.60x = 159,950.76 × 76,666.44
  4. Step 4: Simplify right side
    115,957.60x = 12,262,855,656.81
  5. Step 5: Solve for x
    x = 12,262,855,656.81/115,957.60
  6. Step 6: Final answer
    x = 105,752.93

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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.