Home / 123,660,006.40-185,490,009.60-42,889,139.20

Finding the Fourth Proportional to 123,660,006.40, 185,490,009.60 and 42,889,139.20

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Solution

The fourth proportional to 123,660,006.40, 185,490,009.60 and 42,889,139.20 is: 64,333,708.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,660,006.40 : 185,490,009.60 = 42,889,139.20 : x
  2. Step 2: Convert to fraction form
    123,660,006.40/185,490,009.60 = 42,889,139.20/x
  3. Step 3: Cross multiply
    123,660,006.40x = 185,490,009.60 × 42,889,139.20
  4. Step 4: Simplify right side
    123,660,006.40x = 7,955,506,841,943,737
  5. Step 5: Solve for x
    x = 7,955,506,841,943,737/123,660,006.40
  6. Step 6: Final answer
    x = 64,333,708.80

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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.