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Finding the Fourth Proportional to 208,095.60, 287,172.92 and 117,455.40

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Solution

The fourth proportional to 208,095.60, 287,172.92 and 117,455.40 is: 162,089.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,095.60 : 287,172.92 = 117,455.40 : x
  2. Step 2: Convert to fraction form
    208,095.60/287,172.92 = 117,455.40/x
  3. Step 3: Cross multiply
    208,095.60x = 287,172.92 × 117,455.40
  4. Step 4: Simplify right side
    208,095.60x = 33,730,010,187.77
  5. Step 5: Solve for x
    x = 33,730,010,187.77/208,095.60
  6. Step 6: Final answer
    x = 162,089.01

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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.