Home / 121,583,490.60-167,780,178.18-66,578,399.40

Finding the Fourth Proportional to 121,583,490.60, 167,780,178.18 and 66,578,399.40

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Solution

The fourth proportional to 121,583,490.60, 167,780,178.18 and 66,578,399.40 is: 91,875,431.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,583,490.60 : 167,780,178.18 = 66,578,399.40 : x
  2. Step 2: Convert to fraction form
    121,583,490.60/167,780,178.18 = 66,578,399.40/x
  3. Step 3: Cross multiply
    121,583,490.60x = 167,780,178.18 × 66,578,399.40
  4. Step 4: Simplify right side
    121,583,490.60x = 11,170,535,714,271,206
  5. Step 5: Solve for x
    x = 11,170,535,714,271,206/121,583,490.60
  6. Step 6: Final answer
    x = 91,875,431.93

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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.