Home / 121,774,153.23-168,072,744.95-72,242,020.42

Finding the Fourth Proportional to 121,774,153.23, 168,072,744.95 and 72,242,020.42

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Solution

The fourth proportional to 121,774,153.23, 168,072,744.95 and 72,242,020.42 is: 99,708,471.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,774,153.23 : 168,072,744.95 = 72,242,020.42 : x
  2. Step 2: Convert to fraction form
    121,774,153.23/168,072,744.95 = 72,242,020.42/x
  3. Step 3: Cross multiply
    121,774,153.23x = 168,072,744.95 × 72,242,020.42
  4. Step 4: Simplify right side
    121,774,153.23x = 12,141,914,672,303,170
  5. Step 5: Solve for x
    x = 12,141,914,672,303,170/121,774,153.23
  6. Step 6: Final answer
    x = 99,708,471.38

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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.