Home / 208,428.90-287,632.14-112,935.57

Finding the Fourth Proportional to 208,428.90, 287,632.14 and 112,935.57

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Solution

The fourth proportional to 208,428.90, 287,632.14 and 112,935.57 is: 155,851.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,428.90 : 287,632.14 = 112,935.57 : x
  2. Step 2: Convert to fraction form
    208,428.90/287,632.14 = 112,935.57/x
  3. Step 3: Cross multiply
    208,428.90x = 287,632.14 × 112,935.57
  4. Step 4: Simplify right side
    208,428.90x = 32,483,899,681.22
  5. Step 5: Solve for x
    x = 32,483,899,681.22/208,428.90
  6. Step 6: Final answer
    x = 155,851.23

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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.