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Finding the Fourth Proportional to 101,133.76, 139,564.64 and 56,421.76

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Solution

The fourth proportional to 101,133.76, 139,564.64 and 56,421.76 is: 77,862.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,133.76 : 139,564.64 = 56,421.76 : x
  2. Step 2: Convert to fraction form
    101,133.76/139,564.64 = 56,421.76/x
  3. Step 3: Cross multiply
    101,133.76x = 139,564.64 × 56,421.76
  4. Step 4: Simplify right side
    101,133.76x = 7,874,482,622.57
  5. Step 5: Solve for x
    x = 7,874,482,622.57/101,133.76
  6. Step 6: Final answer
    x = 77,862.06

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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.