Home / 121,430,809.70-167,574,737.90-66,426,666.20

Finding the Fourth Proportional to 121,430,809.70, 167,574,737.90 and 66,426,666.20

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Solution

The fourth proportional to 121,430,809.70, 167,574,737.90 and 66,426,666.20 is: 91,668,919.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,430,809.70 : 167,574,737.90 = 66,426,666.20 : x
  2. Step 2: Convert to fraction form
    121,430,809.70/167,574,737.90 = 66,426,666.20/x
  3. Step 3: Cross multiply
    121,430,809.70x = 167,574,737.90 × 66,426,666.20
  4. Step 4: Simplify right side
    121,430,809.70x = 11,131,431,178,035,790
  5. Step 5: Solve for x
    x = 11,131,431,178,035,790/121,430,809.70
  6. Step 6: Final answer
    x = 91,668,919.98

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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.