Home / 121,428,335.61-167,572,432.67-66,424,192.65

Finding the Fourth Proportional to 121,428,335.61, 167,572,432.67 and 66,424,192.65

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Solution

The fourth proportional to 121,428,335.61, 167,572,432.67 and 66,424,192.65 is: 91,666,113.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,428,335.61 : 167,572,432.67 = 66,424,192.65 : x
  2. Step 2: Convert to fraction form
    121,428,335.61/167,572,432.67 = 66,424,192.65/x
  3. Step 3: Cross multiply
    121,428,335.61x = 167,572,432.67 × 66,424,192.65
  4. Step 4: Simplify right side
    121,428,335.61x = 11,130,863,550,169,112
  5. Step 5: Solve for x
    x = 11,130,863,550,169,112/121,428,335.61
  6. Step 6: Final answer
    x = 91,666,113.14

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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.