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Finding the Fourth Proportional to 112,281.44, 154,948.48 and 61,980.40

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Solution

The fourth proportional to 112,281.44, 154,948.48 and 61,980.40 is: 85,533.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,281.44 : 154,948.48 = 61,980.40 : x
  2. Step 2: Convert to fraction form
    112,281.44/154,948.48 = 61,980.40/x
  3. Step 3: Cross multiply
    112,281.44x = 154,948.48 × 61,980.40
  4. Step 4: Simplify right side
    112,281.44x = 9,603,768,769.79
  5. Step 5: Solve for x
    x = 9,603,768,769.79/112,281.44
  6. Step 6: Final answer
    x = 85,533.00

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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.