Home / 117,070.87-161,423.12-86,488.21

Finding the Fourth Proportional to 117,070.87, 161,423.12 and 86,488.21

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Solution

The fourth proportional to 117,070.87, 161,423.12 and 86,488.21 is: 119,254.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,070.87 : 161,423.12 = 86,488.21 : x
  2. Step 2: Convert to fraction form
    117,070.87/161,423.12 = 86,488.21/x
  3. Step 3: Cross multiply
    117,070.87x = 161,423.12 × 86,488.21
  4. Step 4: Simplify right side
    117,070.87x = 13,961,197,330.17
  5. Step 5: Solve for x
    x = 13,961,197,330.17/117,070.87
  6. Step 6: Final answer
    x = 119,254.24

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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.