Home / 105,275.40-145,279.76-57,529.05

Finding the Fourth Proportional to 105,275.40, 145,279.76 and 57,529.05

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Solution

The fourth proportional to 105,275.40, 145,279.76 and 57,529.05 is: 79,389.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,275.40 : 145,279.76 = 57,529.05 : x
  2. Step 2: Convert to fraction form
    105,275.40/145,279.76 = 57,529.05/x
  3. Step 3: Cross multiply
    105,275.40x = 145,279.76 × 57,529.05
  4. Step 4: Simplify right side
    105,275.40x = 8,357,806,289.38
  5. Step 5: Solve for x
    x = 8,357,806,289.38/105,275.40
  6. Step 6: Final answer
    x = 79,389.93

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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.