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Finding the Fourth Proportional to 99,710.94, 137,601.20 and 57,277.68

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Solution

The fourth proportional to 99,710.94, 137,601.20 and 57,277.68 is: 79,043.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,710.94 : 137,601.20 = 57,277.68 : x
  2. Step 2: Convert to fraction form
    99,710.94/137,601.20 = 57,277.68/x
  3. Step 3: Cross multiply
    99,710.94x = 137,601.20 × 57,277.68
  4. Step 4: Simplify right side
    99,710.94x = 7,881,477,501.22
  5. Step 5: Solve for x
    x = 7,881,477,501.22/99,710.94
  6. Step 6: Final answer
    x = 79,043.26

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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.