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Finding the Fourth Proportional to 105,062.40, 139,622.40 and 105,062.40

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Solution

The fourth proportional to 105,062.40, 139,622.40 and 105,062.40 is: 139,622.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,062.40 : 139,622.40 = 105,062.40 : x
  2. Step 2: Convert to fraction form
    105,062.40/139,622.40 = 105,062.40/x
  3. Step 3: Cross multiply
    105,062.40x = 139,622.40 × 105,062.40
  4. Step 4: Simplify right side
    105,062.40x = 14,669,064,437.76
  5. Step 5: Solve for x
    x = 14,669,064,437.76/105,062.40
  6. Step 6: Final answer
    x = 139,622.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.