Home / 106,720.14-147,283.47-61,999.50

Finding the Fourth Proportional to 106,720.14, 147,283.47 and 61,999.50

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Solution

The fourth proportional to 106,720.14, 147,283.47 and 61,999.50 is: 85,564.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,720.14 : 147,283.47 = 61,999.50 : x
  2. Step 2: Convert to fraction form
    106,720.14/147,283.47 = 61,999.50/x
  3. Step 3: Cross multiply
    106,720.14x = 147,283.47 × 61,999.50
  4. Step 4: Simplify right side
    106,720.14x = 9,131,501,498.27
  5. Step 5: Solve for x
    x = 9,131,501,498.27/106,720.14
  6. Step 6: Final answer
    x = 85,564.93

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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.