Home / 121,280.14-181,698.52-87,917.45

Finding the Fourth Proportional to 121,280.14, 181,698.52 and 87,917.45

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Solution

The fourth proportional to 121,280.14, 181,698.52 and 87,917.45 is: 131,715.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,280.14 : 181,698.52 = 87,917.45 : x
  2. Step 2: Convert to fraction form
    121,280.14/181,698.52 = 87,917.45/x
  3. Step 3: Cross multiply
    121,280.14x = 181,698.52 × 87,917.45
  4. Step 4: Simplify right side
    121,280.14x = 15,974,470,547.17
  5. Step 5: Solve for x
    x = 15,974,470,547.17/121,280.14
  6. Step 6: Final answer
    x = 131,715.47

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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.