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Finding the Fourth Proportional to 105,813.60, 148,346.40 and 105,813.60

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Solution

The fourth proportional to 105,813.60, 148,346.40 and 105,813.60 is: 148,346.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,813.60 : 148,346.40 = 105,813.60 : x
  2. Step 2: Convert to fraction form
    105,813.60/148,346.40 = 105,813.60/x
  3. Step 3: Cross multiply
    105,813.60x = 148,346.40 × 105,813.60
  4. Step 4: Simplify right side
    105,813.60x = 15,697,066,631.04
  5. Step 5: Solve for x
    x = 15,697,066,631.04/105,813.60
  6. Step 6: Final answer
    x = 148,346.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.