Home / 121,129.31-181,706.07-46,312.40

Finding the Fourth Proportional to 121,129.31, 181,706.07 and 46,312.40

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Solution

The fourth proportional to 121,129.31, 181,706.07 and 46,312.40 is: 69,473.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,129.31 : 181,706.07 = 46,312.40 : x
  2. Step 2: Convert to fraction form
    121,129.31/181,706.07 = 46,312.40/x
  3. Step 3: Cross multiply
    121,129.31x = 181,706.07 × 46,312.40
  4. Step 4: Simplify right side
    121,129.31x = 8,415,243,287.74
  5. Step 5: Solve for x
    x = 8,415,243,287.74/121,129.31
  6. Step 6: Final answer
    x = 69,473.22

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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.