Home / 121,430,781.52-167,574,698.98-66,426,638.02

Finding the Fourth Proportional to 121,430,781.52, 167,574,698.98 and 66,426,638.02

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Solution

The fourth proportional to 121,430,781.52, 167,574,698.98 and 66,426,638.02 is: 91,668,881.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,430,781.52 : 167,574,698.98 = 66,426,638.02 : x
  2. Step 2: Convert to fraction form
    121,430,781.52/167,574,698.98 = 66,426,638.02/x
  3. Step 3: Cross multiply
    121,430,781.52x = 167,574,698.98 × 66,426,638.02
  4. Step 4: Simplify right side
    121,430,781.52x = 11,131,423,869,869,920
  5. Step 5: Solve for x
    x = 11,131,423,869,869,920/121,430,781.52
  6. Step 6: Final answer
    x = 91,668,881.08

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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.