Home / 121,985.01-182,685.74-77,472.45

Finding the Fourth Proportional to 121,985.01, 182,685.74 and 77,472.45

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Solution

The fourth proportional to 121,985.01, 182,685.74 and 77,472.45 is: 116,023.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,985.01 : 182,685.74 = 77,472.45 : x
  2. Step 2: Convert to fraction form
    121,985.01/182,685.74 = 77,472.45/x
  3. Step 3: Cross multiply
    121,985.01x = 182,685.74 × 77,472.45
  4. Step 4: Simplify right side
    121,985.01x = 14,153,111,470.50
  5. Step 5: Solve for x
    x = 14,153,111,470.50/121,985.01
  6. Step 6: Final answer
    x = 116,023.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.