Home / 99,015.75-136,650.38-54,312.39

Finding the Fourth Proportional to 99,015.75, 136,650.38 and 54,312.39

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Solution

The fourth proportional to 99,015.75, 136,650.38 and 54,312.39 is: 74,955.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,015.75 : 136,650.38 = 54,312.39 : x
  2. Step 2: Convert to fraction form
    99,015.75/136,650.38 = 54,312.39/x
  3. Step 3: Cross multiply
    99,015.75x = 136,650.38 × 54,312.39
  4. Step 4: Simplify right side
    99,015.75x = 7,421,808,460.65
  5. Step 5: Solve for x
    x = 7,421,808,460.65/99,015.75
  6. Step 6: Final answer
    x = 74,955.84

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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.