Home / 112,325.81-154,746.18-78,272.50

Finding the Fourth Proportional to 112,325.81, 154,746.18 and 78,272.50

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Solution

The fourth proportional to 112,325.81, 154,746.18 and 78,272.50 is: 107,832.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,325.81 : 154,746.18 = 78,272.50 : x
  2. Step 2: Convert to fraction form
    112,325.81/154,746.18 = 78,272.50/x
  3. Step 3: Cross multiply
    112,325.81x = 154,746.18 × 78,272.50
  4. Step 4: Simplify right side
    112,325.81x = 12,112,370,374.05
  5. Step 5: Solve for x
    x = 12,112,370,374.05/112,325.81
  6. Step 6: Final answer
    x = 107,832.48

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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.