Home / 105,381.04-145,423.80-57,634.24

Finding the Fourth Proportional to 105,381.04, 145,423.80 and 57,634.24

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Solution

The fourth proportional to 105,381.04, 145,423.80 and 57,634.24 is: 79,534.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,381.04 : 145,423.80 = 57,634.24 : x
  2. Step 2: Convert to fraction form
    105,381.04/145,423.80 = 57,634.24/x
  3. Step 3: Cross multiply
    105,381.04x = 145,423.80 × 57,634.24
  4. Step 4: Simplify right side
    105,381.04x = 8,381,390,190.91
  5. Step 5: Solve for x
    x = 8,381,390,190.91/105,381.04
  6. Step 6: Final answer
    x = 79,534.14

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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.