Home / 208,159.08-287,261.89-122,119.53

Finding the Fourth Proportional to 208,159.08, 287,261.89 and 122,119.53

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Solution

The fourth proportional to 208,159.08, 287,261.89 and 122,119.53 is: 168,526.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,159.08 : 287,261.89 = 122,119.53 : x
  2. Step 2: Convert to fraction form
    208,159.08/287,261.89 = 122,119.53/x
  3. Step 3: Cross multiply
    208,159.08x = 287,261.89 × 122,119.53
  4. Step 4: Simplify right side
    208,159.08x = 35,080,286,993.71
  5. Step 5: Solve for x
    x = 35,080,286,993.71/208,159.08
  6. Step 6: Final answer
    x = 168,526.34

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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.