Home / 172,461,707.80-258,692,561.70-86,213,426.20

Finding the Fourth Proportional to 172,461,707.80, 258,692,561.70 and 86,213,426.20

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Solution

The fourth proportional to 172,461,707.80, 258,692,561.70 and 86,213,426.20 is: 129,320,139.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,461,707.80 : 258,692,561.70 = 86,213,426.20 : x
  2. Step 2: Convert to fraction form
    172,461,707.80/258,692,561.70 = 86,213,426.20/x
  3. Step 3: Cross multiply
    172,461,707.80x = 258,692,561.70 × 86,213,426.20
  4. Step 4: Simplify right side
    172,461,707.80x = 22,302,772,076,611,896
  5. Step 5: Solve for x
    x = 22,302,772,076,611,896/172,461,707.80
  6. Step 6: Final answer
    x = 129,320,139.30

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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.