Home / 287,735.40-431,666.32-88,071.18

Finding the Fourth Proportional to 287,735.40, 431,666.32 and 88,071.18

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Solution

The fourth proportional to 287,735.40, 431,666.32 and 88,071.18 is: 132,126.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,735.40 : 431,666.32 = 88,071.18 : x
  2. Step 2: Convert to fraction form
    287,735.40/431,666.32 = 88,071.18/x
  3. Step 3: Cross multiply
    287,735.40x = 431,666.32 × 88,071.18
  4. Step 4: Simplify right side
    287,735.40x = 38,017,362,168.66
  5. Step 5: Solve for x
    x = 38,017,362,168.66/287,735.40
  6. Step 6: Final answer
    x = 132,126.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.