Home / 121,133,038.61-167,162,742.91-66,128,895.11

Finding the Fourth Proportional to 121,133,038.61, 167,162,742.91 and 66,128,895.11

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Solution

The fourth proportional to 121,133,038.61, 167,162,742.91 and 66,128,895.11 is: 91,257,411.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,133,038.61 : 167,162,742.91 = 66,128,895.11 : x
  2. Step 2: Convert to fraction form
    121,133,038.61/167,162,742.91 = 66,128,895.11/x
  3. Step 3: Cross multiply
    121,133,038.61x = 167,162,742.91 × 66,128,895.11
  4. Step 4: Simplify right side
    121,133,038.61x = 11,054,287,492,195,286
  5. Step 5: Solve for x
    x = 11,054,287,492,195,286/121,133,038.61
  6. Step 6: Final answer
    x = 91,257,411.02

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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.