Home / 105,272.84-145,278.42-57,528.20

Finding the Fourth Proportional to 105,272.84, 145,278.42 and 57,528.20

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Solution

The fourth proportional to 105,272.84, 145,278.42 and 57,528.20 is: 79,389.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,272.84 : 145,278.42 = 57,528.20 : x
  2. Step 2: Convert to fraction form
    105,272.84/145,278.42 = 57,528.20/x
  3. Step 3: Cross multiply
    105,272.84x = 145,278.42 × 57,528.20
  4. Step 4: Simplify right side
    105,272.84x = 8,357,606,001.44
  5. Step 5: Solve for x
    x = 8,357,606,001.44/105,272.84
  6. Step 6: Final answer
    x = 79,389.95

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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.