Home / 103,613.35-155,328.90-70,225.15

Finding the Fourth Proportional to 103,613.35, 155,328.90 and 70,225.15

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Solution

The fourth proportional to 103,613.35, 155,328.90 and 70,225.15 is: 105,275.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,613.35 : 155,328.90 = 70,225.15 : x
  2. Step 2: Convert to fraction form
    103,613.35/155,328.90 = 70,225.15/x
  3. Step 3: Cross multiply
    103,613.35x = 155,328.90 × 70,225.15
  4. Step 4: Simplify right side
    103,613.35x = 10,907,995,301.84
  5. Step 5: Solve for x
    x = 10,907,995,301.84/103,613.35
  6. Step 6: Final answer
    x = 105,275.96

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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.