Home / 105,716.04-145,888.77-57,318.36

Finding the Fourth Proportional to 105,716.04, 145,888.77 and 57,318.36

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Solution

The fourth proportional to 105,716.04, 145,888.77 and 57,318.36 is: 79,099.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,716.04 : 145,888.77 = 57,318.36 : x
  2. Step 2: Convert to fraction form
    105,716.04/145,888.77 = 57,318.36/x
  3. Step 3: Cross multiply
    105,716.04x = 145,888.77 × 57,318.36
  4. Step 4: Simplify right side
    105,716.04x = 8,362,105,038.82
  5. Step 5: Solve for x
    x = 8,362,105,038.82/105,716.04
  6. Step 6: Final answer
    x = 79,099.68

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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.