Home / 427,117.06-640,681.80-111,574

Finding the Fourth Proportional to 427,117.06, 640,681.80 and 111,574

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Solution

The fourth proportional to 427,117.06, 640,681.80 and 111,574 is: 167,362.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,117.06 : 640,681.80 = 111,574 : x
  2. Step 2: Convert to fraction form
    427,117.06/640,681.80 = 111,574/x
  3. Step 3: Cross multiply
    427,117.06x = 640,681.80 × 111,574
  4. Step 4: Simplify right side
    427,117.06x = 71,483,431,153.20
  5. Step 5: Solve for x
    x = 71,483,431,153.20/427,117.06
  6. Step 6: Final answer
    x = 167,362.62

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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.