Home / 121,214,657.40-181,715,697.90-72,711,808.80

Finding the Fourth Proportional to 121,214,657.40, 181,715,697.90 and 72,711,808.80

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Solution

The fourth proportional to 121,214,657.40, 181,715,697.90 and 72,711,808.80 is: 109,003,955.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,214,657.40 : 181,715,697.90 = 72,711,808.80 : x
  2. Step 2: Convert to fraction form
    121,214,657.40/181,715,697.90 = 72,711,808.80/x
  3. Step 3: Cross multiply
    121,214,657.40x = 181,715,697.90 × 72,711,808.80
  4. Step 4: Simplify right side
    121,214,657.40x = 13,212,877,081,663,362
  5. Step 5: Solve for x
    x = 13,212,877,081,663,362/121,214,657.40
  6. Step 6: Final answer
    x = 109,003,955.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.