Home / 106,988.69-147,644.12-61,666.31

Finding the Fourth Proportional to 106,988.69, 147,644.12 and 61,666.31

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Solution

The fourth proportional to 106,988.69, 147,644.12 and 61,666.31 is: 85,099.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,988.69 : 147,644.12 = 61,666.31 : x
  2. Step 2: Convert to fraction form
    106,988.69/147,644.12 = 61,666.31/x
  3. Step 3: Cross multiply
    106,988.69x = 147,644.12 × 61,666.31
  4. Step 4: Simplify right side
    106,988.69x = 9,104,668,596.87
  5. Step 5: Solve for x
    x = 9,104,668,596.87/106,988.69
  6. Step 6: Final answer
    x = 85,099.35

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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.