Home / 102,920.75-142,030.64-55,816.75

Finding the Fourth Proportional to 102,920.75, 142,030.64 and 55,816.75

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Solution

The fourth proportional to 102,920.75, 142,030.64 and 55,816.75 is: 77,027.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,920.75 : 142,030.64 = 55,816.75 : x
  2. Step 2: Convert to fraction form
    102,920.75/142,030.64 = 55,816.75/x
  3. Step 3: Cross multiply
    102,920.75x = 142,030.64 × 55,816.75
  4. Step 4: Simplify right side
    102,920.75x = 7,927,688,446.14
  5. Step 5: Solve for x
    x = 7,927,688,446.14/102,920.75
  6. Step 6: Final answer
    x = 77,027.12

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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.