Home / 99,219.08-136,918.40-58,931.77

Finding the Fourth Proportional to 99,219.08, 136,918.40 and 58,931.77

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Solution

The fourth proportional to 99,219.08, 136,918.40 and 58,931.77 is: 81,323.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,219.08 : 136,918.40 = 58,931.77 : x
  2. Step 2: Convert to fraction form
    99,219.08/136,918.40 = 58,931.77/x
  3. Step 3: Cross multiply
    99,219.08x = 136,918.40 × 58,931.77
  4. Step 4: Simplify right side
    99,219.08x = 8,068,843,362.91
  5. Step 5: Solve for x
    x = 8,068,843,362.91/99,219.08
  6. Step 6: Final answer
    x = 81,323.51

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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.