Home / 105,275.31-145,279.08-57,527.79

Finding the Fourth Proportional to 105,275.31, 145,279.08 and 57,527.79

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Solution

The fourth proportional to 105,275.31, 145,279.08 and 57,527.79 is: 79,387.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,275.31 : 145,279.08 = 57,527.79 : x
  2. Step 2: Convert to fraction form
    105,275.31/145,279.08 = 57,527.79/x
  3. Step 3: Cross multiply
    105,275.31x = 145,279.08 × 57,527.79
  4. Step 4: Simplify right side
    105,275.31x = 8,357,584,405.63
  5. Step 5: Solve for x
    x = 8,357,584,405.63/105,275.31
  6. Step 6: Final answer
    x = 79,387.89

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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.