Home / 103,780.10-155,668.55-70,417.22

Finding the Fourth Proportional to 103,780.10, 155,668.55 and 70,417.22

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Solution

The fourth proportional to 103,780.10, 155,668.55 and 70,417.22 is: 105,624.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,780.10 : 155,668.55 = 70,417.22 : x
  2. Step 2: Convert to fraction form
    103,780.10/155,668.55 = 70,417.22/x
  3. Step 3: Cross multiply
    103,780.10x = 155,668.55 × 70,417.22
  4. Step 4: Simplify right side
    103,780.10x = 10,961,746,532.43
  5. Step 5: Solve for x
    x = 10,961,746,532.43/103,780.10
  6. Step 6: Final answer
    x = 105,624.74

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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.