Home / 121,134.61-181,501.97-70,391.19

Finding the Fourth Proportional to 121,134.61, 181,501.97 and 70,391.19

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Solution

The fourth proportional to 121,134.61, 181,501.97 and 70,391.19 is: 105,470.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,134.61 : 181,501.97 = 70,391.19 : x
  2. Step 2: Convert to fraction form
    121,134.61/181,501.97 = 70,391.19/x
  3. Step 3: Cross multiply
    121,134.61x = 181,501.97 × 70,391.19
  4. Step 4: Simplify right side
    121,134.61x = 12,776,139,303.69
  5. Step 5: Solve for x
    x = 12,776,139,303.69/121,134.61
  6. Step 6: Final answer
    x = 105,470.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.