Home / 112,292.40-154,962.48-61,991.28

Finding the Fourth Proportional to 112,292.40, 154,962.48 and 61,991.28

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Solution

The fourth proportional to 112,292.40, 154,962.48 and 61,991.28 is: 85,547.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,292.40 : 154,962.48 = 61,991.28 : x
  2. Step 2: Convert to fraction form
    112,292.40/154,962.48 = 61,991.28/x
  3. Step 3: Cross multiply
    112,292.40x = 154,962.48 × 61,991.28
  4. Step 4: Simplify right side
    112,292.40x = 9,606,322,487.17
  5. Step 5: Solve for x
    x = 9,606,322,487.17/112,292.40
  6. Step 6: Final answer
    x = 85,547.40

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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.