Home / 208,421.64-287,621.09-112,928.58

Finding the Fourth Proportional to 208,421.64, 287,621.09 and 112,928.58

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Solution

The fourth proportional to 208,421.64, 287,621.09 and 112,928.58 is: 155,841.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,421.64 : 287,621.09 = 112,928.58 : x
  2. Step 2: Convert to fraction form
    208,421.64/287,621.09 = 112,928.58/x
  3. Step 3: Cross multiply
    208,421.64x = 287,621.09 × 112,928.58
  4. Step 4: Simplify right side
    208,421.64x = 32,480,641,554.07
  5. Step 5: Solve for x
    x = 32,480,641,554.07/208,421.64
  6. Step 6: Final answer
    x = 155,841.02

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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.