Home / 153,515.04-230,319.09-78,688.23

Finding the Fourth Proportional to 153,515.04, 230,319.09 and 78,688.23

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Solution

The fourth proportional to 153,515.04, 230,319.09 and 78,688.23 is: 118,056.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,515.04 : 230,319.09 = 78,688.23 : x
  2. Step 2: Convert to fraction form
    153,515.04/230,319.09 = 78,688.23/x
  3. Step 3: Cross multiply
    153,515.04x = 230,319.09 × 78,688.23
  4. Step 4: Simplify right side
    153,515.04x = 18,123,401,527.31
  5. Step 5: Solve for x
    x = 18,123,401,527.31/153,515.04
  6. Step 6: Final answer
    x = 118,056.20

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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.