Home / 100,807.28-139,056.10-63,015.92

Finding the Fourth Proportional to 100,807.28, 139,056.10 and 63,015.92

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Solution

The fourth proportional to 100,807.28, 139,056.10 and 63,015.92 is: 86,925.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,807.28 : 139,056.10 = 63,015.92 : x
  2. Step 2: Convert to fraction form
    100,807.28/139,056.10 = 63,015.92/x
  3. Step 3: Cross multiply
    100,807.28x = 139,056.10 × 63,015.92
  4. Step 4: Simplify right side
    100,807.28x = 8,762,748,073.11
  5. Step 5: Solve for x
    x = 8,762,748,073.11/100,807.28
  6. Step 6: Final answer
    x = 86,925.75

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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.