Home / 121,133,037.61-167,162,741.53-66,128,894.11

Finding the Fourth Proportional to 121,133,037.61, 167,162,741.53 and 66,128,894.11

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Solution

The fourth proportional to 121,133,037.61, 167,162,741.53 and 66,128,894.11 is: 91,257,409.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,133,037.61 : 167,162,741.53 = 66,128,894.11 : x
  2. Step 2: Convert to fraction form
    121,133,037.61/167,162,741.53 = 66,128,894.11/x
  3. Step 3: Cross multiply
    121,133,037.61x = 167,162,741.53 × 66,128,894.11
  4. Step 4: Simplify right side
    121,133,037.61x = 11,054,287,233,774,670
  5. Step 5: Solve for x
    x = 11,054,287,233,774,670/121,133,037.61
  6. Step 6: Final answer
    x = 91,257,409.64

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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.