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Finding the Fourth Proportional to 101,349.50, 139,870.95 and 56,646.14

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Solution

The fourth proportional to 101,349.50, 139,870.95 and 56,646.14 is: 78,176.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,349.50 : 139,870.95 = 56,646.14 : x
  2. Step 2: Convert to fraction form
    101,349.50/139,870.95 = 56,646.14/x
  3. Step 3: Cross multiply
    101,349.50x = 139,870.95 × 56,646.14
  4. Step 4: Simplify right side
    101,349.50x = 7,923,149,415.63
  5. Step 5: Solve for x
    x = 7,923,149,415.63/101,349.50
  6. Step 6: Final answer
    x = 78,176.50

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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.