Home / 99,135.69-136,807.61-53,813.76

Finding the Fourth Proportional to 99,135.69, 136,807.61 and 53,813.76

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Solution

The fourth proportional to 99,135.69, 136,807.61 and 53,813.76 is: 74,263.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,135.69 : 136,807.61 = 53,813.76 : x
  2. Step 2: Convert to fraction form
    99,135.69/136,807.61 = 53,813.76/x
  3. Step 3: Cross multiply
    99,135.69x = 136,807.61 × 53,813.76
  4. Step 4: Simplify right side
    99,135.69x = 7,362,131,890.71
  5. Step 5: Solve for x
    x = 7,362,131,890.71/99,135.69
  6. Step 6: Final answer
    x = 74,263.18

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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.