Home / 106,712.48-147,087.60-75,678.08

Finding the Fourth Proportional to 106,712.48, 147,087.60 and 75,678.08

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Solution

The fourth proportional to 106,712.48, 147,087.60 and 75,678.08 is: 104,311.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,712.48 : 147,087.60 = 75,678.08 : x
  2. Step 2: Convert to fraction form
    106,712.48/147,087.60 = 75,678.08/x
  3. Step 3: Cross multiply
    106,712.48x = 147,087.60 × 75,678.08
  4. Step 4: Simplify right side
    106,712.48x = 11,131,307,159.81
  5. Step 5: Solve for x
    x = 11,131,307,159.81/106,712.48
  6. Step 6: Final answer
    x = 104,311.20

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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.