Home / 86,684.04-129,254.40-86,518.80

Finding the Fourth Proportional to 86,684.04, 129,254.40 and 86,518.80

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Solution

The fourth proportional to 86,684.04, 129,254.40 and 86,518.80 is: 129,008.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,684.04 : 129,254.40 = 86,518.80 : x
  2. Step 2: Convert to fraction form
    86,684.04/129,254.40 = 86,518.80/x
  3. Step 3: Cross multiply
    86,684.04x = 129,254.40 × 86,518.80
  4. Step 4: Simplify right side
    86,684.04x = 11,182,935,582.72
  5. Step 5: Solve for x
    x = 11,182,935,582.72/86,684.04
  6. Step 6: Final answer
    x = 129,008.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.