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Finding the Fourth Proportional to 101,362.40, 139,884.04 and 67,312.16

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Solution

The fourth proportional to 101,362.40, 139,884.04 and 67,312.16 is: 92,893.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,362.40 : 139,884.04 = 67,312.16 : x
  2. Step 2: Convert to fraction form
    101,362.40/139,884.04 = 67,312.16/x
  3. Step 3: Cross multiply
    101,362.40x = 139,884.04 × 67,312.16
  4. Step 4: Simplify right side
    101,362.40x = 9,415,896,881.93
  5. Step 5: Solve for x
    x = 9,415,896,881.93/101,362.40
  6. Step 6: Final answer
    x = 92,893.39

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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.