Home / 208,178.61-287,287.20-112,685.28

Finding the Fourth Proportional to 208,178.61, 287,287.20 and 112,685.28

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Solution

The fourth proportional to 208,178.61, 287,287.20 and 112,685.28 is: 155,506.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,178.61 : 287,287.20 = 112,685.28 : x
  2. Step 2: Convert to fraction form
    208,178.61/287,287.20 = 112,685.28/x
  3. Step 3: Cross multiply
    208,178.61x = 287,287.20 × 112,685.28
  4. Step 4: Simplify right side
    208,178.61x = 32,373,038,572.42
  5. Step 5: Solve for x
    x = 32,373,038,572.42/208,178.61
  6. Step 6: Final answer
    x = 155,506.08

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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.