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Finding the Fourth Proportional to 119,153.87, 178,730.72 and 30,407.40

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Solution

The fourth proportional to 119,153.87, 178,730.72 and 30,407.40 is: 45,611.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,153.87 : 178,730.72 = 30,407.40 : x
  2. Step 2: Convert to fraction form
    119,153.87/178,730.72 = 30,407.40/x
  3. Step 3: Cross multiply
    119,153.87x = 178,730.72 × 30,407.40
  4. Step 4: Simplify right side
    119,153.87x = 5,434,736,457.32
  5. Step 5: Solve for x
    x = 5,434,736,457.32/119,153.87
  6. Step 6: Final answer
    x = 45,611.08

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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.