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Finding the Fourth Proportional to 139,417.16, 192,395.28 and 75,754.94

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Solution

The fourth proportional to 139,417.16, 192,395.28 and 75,754.94 is: 104,541.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,417.16 : 192,395.28 = 75,754.94 : x
  2. Step 2: Convert to fraction form
    139,417.16/192,395.28 = 75,754.94/x
  3. Step 3: Cross multiply
    139,417.16x = 192,395.28 × 75,754.94
  4. Step 4: Simplify right side
    139,417.16x = 14,574,891,930.71
  5. Step 5: Solve for x
    x = 14,574,891,930.71/139,417.16
  6. Step 6: Final answer
    x = 104,541.60

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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.