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Finding the Fourth Proportional to 106,647.34, 147,220.30 and 63,641.74

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Solution

The fourth proportional to 106,647.34, 147,220.30 and 63,641.74 is: 87,853.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,647.34 : 147,220.30 = 63,641.74 : x
  2. Step 2: Convert to fraction form
    106,647.34/147,220.30 = 63,641.74/x
  3. Step 3: Cross multiply
    106,647.34x = 147,220.30 × 63,641.74
  4. Step 4: Simplify right side
    106,647.34x = 9,369,356,055.32
  5. Step 5: Solve for x
    x = 9,369,356,055.32/106,647.34
  6. Step 6: Final answer
    x = 87,853.63

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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.