Home / 126,500.65-174,565.16-78,124.21

Finding the Fourth Proportional to 126,500.65, 174,565.16 and 78,124.21

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Solution

The fourth proportional to 126,500.65, 174,565.16 and 78,124.21 is: 107,807.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,500.65 : 174,565.16 = 78,124.21 : x
  2. Step 2: Convert to fraction form
    126,500.65/174,565.16 = 78,124.21/x
  3. Step 3: Cross multiply
    126,500.65x = 174,565.16 × 78,124.21
  4. Step 4: Simplify right side
    126,500.65x = 13,637,764,684.46
  5. Step 5: Solve for x
    x = 13,637,764,684.46/126,500.65
  6. Step 6: Final answer
    x = 107,807.86

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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.