Home / 112,384.45-168,084.60-85,812.40

Finding the Fourth Proportional to 112,384.45, 168,084.60 and 85,812.40

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Solution

The fourth proportional to 112,384.45, 168,084.60 and 85,812.40 is: 128,342.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,384.45 : 168,084.60 = 85,812.40 : x
  2. Step 2: Convert to fraction form
    112,384.45/168,084.60 = 85,812.40/x
  3. Step 3: Cross multiply
    112,384.45x = 168,084.60 × 85,812.40
  4. Step 4: Simplify right side
    112,384.45x = 14,423,742,929.04
  5. Step 5: Solve for x
    x = 14,423,742,929.04/112,384.45
  6. Step 6: Final answer
    x = 128,342.87

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1.5x scale

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.