Home / 106,985.16-147,711.24-66,715.20

Finding the Fourth Proportional to 106,985.16, 147,711.24 and 66,715.20

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Solution

The fourth proportional to 106,985.16, 147,711.24 and 66,715.20 is: 92,111.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,985.16 : 147,711.24 = 66,715.20 : x
  2. Step 2: Convert to fraction form
    106,985.16/147,711.24 = 66,715.20/x
  3. Step 3: Cross multiply
    106,985.16x = 147,711.24 × 66,715.20
  4. Step 4: Simplify right side
    106,985.16x = 9,854,584,918.85
  5. Step 5: Solve for x
    x = 9,854,584,918.85/106,985.16
  6. Step 6: Final answer
    x = 92,111.70

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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.