Home / 142,016,666.40-213,024,999.60-80,794,663.20

Finding the Fourth Proportional to 142,016,666.40, 213,024,999.60 and 80,794,663.20

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Solution

The fourth proportional to 142,016,666.40, 213,024,999.60 and 80,794,663.20 is: 121,191,994.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,016,666.40 : 213,024,999.60 = 80,794,663.20 : x
  2. Step 2: Convert to fraction form
    142,016,666.40/213,024,999.60 = 80,794,663.20/x
  3. Step 3: Cross multiply
    142,016,666.40x = 213,024,999.60 × 80,794,663.20
  4. Step 4: Simplify right side
    142,016,666.40x = 17,211,283,095,862,134
  5. Step 5: Solve for x
    x = 17,211,283,095,862,134/142,016,666.40
  6. Step 6: Final answer
    x = 121,191,994.80

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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.