Home / 103,631.40-155,447.10-70,367.40

Finding the Fourth Proportional to 103,631.40, 155,447.10 and 70,367.40

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Solution

The fourth proportional to 103,631.40, 155,447.10 and 70,367.40 is: 105,551.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,631.40 : 155,447.10 = 70,367.40 : x
  2. Step 2: Convert to fraction form
    103,631.40/155,447.10 = 70,367.40/x
  3. Step 3: Cross multiply
    103,631.40x = 155,447.10 × 70,367.40
  4. Step 4: Simplify right side
    103,631.40x = 10,938,408,264.54
  5. Step 5: Solve for x
    x = 10,938,408,264.54/103,631.40
  6. Step 6: Final answer
    x = 105,551.10

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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.