Home / 208,422.68-287,621.40-112,929.08

Finding the Fourth Proportional to 208,422.68, 287,621.40 and 112,929.08

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Solution

The fourth proportional to 208,422.68, 287,621.40 and 112,929.08 is: 155,841.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,422.68 : 287,621.40 = 112,929.08 : x
  2. Step 2: Convert to fraction form
    208,422.68/287,621.40 = 112,929.08/x
  3. Step 3: Cross multiply
    208,422.68x = 287,621.40 × 112,929.08
  4. Step 4: Simplify right side
    208,422.68x = 32,480,820,090.31
  5. Step 5: Solve for x
    x = 32,480,820,090.31/208,422.68
  6. Step 6: Final answer
    x = 155,841.10

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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.