Home / 105,302.13-145,314.78-57,555.82

Finding the Fourth Proportional to 105,302.13, 145,314.78 and 57,555.82

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Solution

The fourth proportional to 105,302.13, 145,314.78 and 57,555.82 is: 79,425.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,302.13 : 145,314.78 = 57,555.82 : x
  2. Step 2: Convert to fraction form
    105,302.13/145,314.78 = 57,555.82/x
  3. Step 3: Cross multiply
    105,302.13x = 145,314.78 × 57,555.82
  4. Step 4: Simplify right side
    105,302.13x = 8,363,710,955.06
  5. Step 5: Solve for x
    x = 8,363,710,955.06/105,302.13
  6. Step 6: Final answer
    x = 79,425.85

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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.