Home / 208,420.90-287,619.85-112,927.57

Finding the Fourth Proportional to 208,420.90, 287,619.85 and 112,927.57

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Solution

The fourth proportional to 208,420.90, 287,619.85 and 112,927.57 is: 155,839.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,420.90 : 287,619.85 = 112,927.57 : x
  2. Step 2: Convert to fraction form
    208,420.90/287,619.85 = 112,927.57/x
  3. Step 3: Cross multiply
    208,420.90x = 287,619.85 × 112,927.57
  4. Step 4: Simplify right side
    208,420.90x = 32,480,210,744.26
  5. Step 5: Solve for x
    x = 32,480,210,744.26/208,420.90
  6. Step 6: Final answer
    x = 155,839.51

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1.5x scale

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.