Home / 145,328.60-200,530.14-81,666.20

Finding the Fourth Proportional to 145,328.60, 200,530.14 and 81,666.20

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Solution

The fourth proportional to 145,328.60, 200,530.14 and 81,666.20 is: 112,686.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,328.60 : 200,530.14 = 81,666.20 : x
  2. Step 2: Convert to fraction form
    145,328.60/200,530.14 = 81,666.20/x
  3. Step 3: Cross multiply
    145,328.60x = 200,530.14 × 81,666.20
  4. Step 4: Simplify right side
    145,328.60x = 16,376,534,519.27
  5. Step 5: Solve for x
    x = 16,376,534,519.27/145,328.60
  6. Step 6: Final answer
    x = 112,686.25

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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.