Home / 112,868.32-155,756.02-61,881.16

Finding the Fourth Proportional to 112,868.32, 155,756.02 and 61,881.16

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Solution

The fourth proportional to 112,868.32, 155,756.02 and 61,881.16 is: 85,394.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,868.32 : 155,756.02 = 61,881.16 : x
  2. Step 2: Convert to fraction form
    112,868.32/155,756.02 = 61,881.16/x
  3. Step 3: Cross multiply
    112,868.32x = 155,756.02 × 61,881.16
  4. Step 4: Simplify right side
    112,868.32x = 9,638,363,194.58
  5. Step 5: Solve for x
    x = 9,638,363,194.58/112,868.32
  6. Step 6: Final answer
    x = 85,394.76

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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.