Home / 105,275.65-145,280.10-57,529.30

Finding the Fourth Proportional to 105,275.65, 145,280.10 and 57,529.30

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Solution

The fourth proportional to 105,275.65, 145,280.10 and 57,529.30 is: 79,390.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,275.65 : 145,280.10 = 57,529.30 : x
  2. Step 2: Convert to fraction form
    105,275.65/145,280.10 = 57,529.30/x
  3. Step 3: Cross multiply
    105,275.65x = 145,280.10 × 57,529.30
  4. Step 4: Simplify right side
    105,275.65x = 8,357,862,456.93
  5. Step 5: Solve for x
    x = 8,357,862,456.93/105,275.65
  6. Step 6: Final answer
    x = 79,390.27

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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.