Home / 105,429.93-145,493.65-57,683.13

Finding the Fourth Proportional to 105,429.93, 145,493.65 and 57,683.13

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Solution

The fourth proportional to 105,429.93, 145,493.65 and 57,683.13 is: 79,602.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,429.93 : 145,493.65 = 57,683.13 : x
  2. Step 2: Convert to fraction form
    105,429.93/145,493.65 = 57,683.13/x
  3. Step 3: Cross multiply
    105,429.93x = 145,493.65 × 57,683.13
  4. Step 4: Simplify right side
    105,429.93x = 8,392,529,127.12
  5. Step 5: Solve for x
    x = 8,392,529,127.12/105,429.93
  6. Step 6: Final answer
    x = 79,602.91

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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.