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Finding the Fourth Proportional to 106,671.15, 147,200.13 and 63,699.12

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Solution

The fourth proportional to 106,671.15, 147,200.13 and 63,699.12 is: 87,901.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,671.15 : 147,200.13 = 63,699.12 : x
  2. Step 2: Convert to fraction form
    106,671.15/147,200.13 = 63,699.12/x
  3. Step 3: Cross multiply
    106,671.15x = 147,200.13 × 63,699.12
  4. Step 4: Simplify right side
    106,671.15x = 9,376,518,744.89
  5. Step 5: Solve for x
    x = 9,376,518,744.89/106,671.15
  6. Step 6: Final answer
    x = 87,901.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.