Home / 99,140.16-136,808.64-56,703.36

Finding the Fourth Proportional to 99,140.16, 136,808.64 and 56,703.36

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Solution

The fourth proportional to 99,140.16, 136,808.64 and 56,703.36 is: 78,247.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,140.16 : 136,808.64 = 56,703.36 : x
  2. Step 2: Convert to fraction form
    99,140.16/136,808.64 = 56,703.36/x
  3. Step 3: Cross multiply
    99,140.16x = 136,808.64 × 56,703.36
  4. Step 4: Simplify right side
    99,140.16x = 7,757,509,565.03
  5. Step 5: Solve for x
    x = 7,757,509,565.03/99,140.16
  6. Step 6: Final answer
    x = 78,247.90

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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.