Home / 122,421.40-183,632.10-39,323.80

Finding the Fourth Proportional to 122,421.40, 183,632.10 and 39,323.80

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Solution

The fourth proportional to 122,421.40, 183,632.10 and 39,323.80 is: 58,985.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,421.40 : 183,632.10 = 39,323.80 : x
  2. Step 2: Convert to fraction form
    122,421.40/183,632.10 = 39,323.80/x
  3. Step 3: Cross multiply
    122,421.40x = 183,632.10 × 39,323.80
  4. Step 4: Simplify right side
    122,421.40x = 7,221,111,973.98
  5. Step 5: Solve for x
    x = 7,221,111,973.98/122,421.40
  6. Step 6: Final answer
    x = 58,985.70

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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.