Home / 121,720,030.60-167,991,670.54-77,070,152.74

Finding the Fourth Proportional to 121,720,030.60, 167,991,670.54 and 77,070,152.74

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Solution

The fourth proportional to 121,720,030.60, 167,991,670.54 and 77,070,152.74 is: 106,368,225.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,720,030.60 : 167,991,670.54 = 77,070,152.74 : x
  2. Step 2: Convert to fraction form
    121,720,030.60/167,991,670.54 = 77,070,152.74/x
  3. Step 3: Cross multiply
    121,720,030.60x = 167,991,670.54 × 77,070,152.74
  4. Step 4: Simplify right side
    121,720,030.60x = 12,947,143,707,565,556
  5. Step 5: Solve for x
    x = 12,947,143,707,565,556/121,720,030.60
  6. Step 6: Final answer
    x = 106,368,225.87

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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.