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Finding the Fourth Proportional to 105,812.60, 158,718.90 and 104,257.40

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Solution

The fourth proportional to 105,812.60, 158,718.90 and 104,257.40 is: 156,386.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,812.60 : 158,718.90 = 104,257.40 : x
  2. Step 2: Convert to fraction form
    105,812.60/158,718.90 = 104,257.40/x
  3. Step 3: Cross multiply
    105,812.60x = 158,718.90 × 104,257.40
  4. Step 4: Simplify right side
    105,812.60x = 16,547,619,844.86
  5. Step 5: Solve for x
    x = 16,547,619,844.86/105,812.60
  6. Step 6: Final answer
    x = 156,386.10

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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.