Home / 105,275.78-145,278.18-57,529.42

Finding the Fourth Proportional to 105,275.78, 145,278.18 and 57,529.42

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Solution

The fourth proportional to 105,275.78, 145,278.18 and 57,529.42 is: 79,389.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,275.78 : 145,278.18 = 57,529.42 : x
  2. Step 2: Convert to fraction form
    105,275.78/145,278.18 = 57,529.42/x
  3. Step 3: Cross multiply
    105,275.78x = 145,278.18 × 57,529.42
  4. Step 4: Simplify right side
    105,275.78x = 8,357,769,434.06
  5. Step 5: Solve for x
    x = 8,357,769,434.06/105,275.78
  6. Step 6: Final answer
    x = 79,389.29

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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.