Home / 105,357.49-145,381.40-62,338.30

Finding the Fourth Proportional to 105,357.49, 145,381.40 and 62,338.30

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Solution

The fourth proportional to 105,357.49, 145,381.40 and 62,338.30 is: 86,019.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,357.49 : 145,381.40 = 62,338.30 : x
  2. Step 2: Convert to fraction form
    105,357.49/145,381.40 = 62,338.30/x
  3. Step 3: Cross multiply
    105,357.49x = 145,381.40 × 62,338.30
  4. Step 4: Simplify right side
    105,357.49x = 9,062,828,652.48
  5. Step 5: Solve for x
    x = 9,062,828,652.48/105,357.49
  6. Step 6: Final answer
    x = 86,019.79

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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.