Home / 123,660,005.40-185,490,008.10-42,889,138.20

Finding the Fourth Proportional to 123,660,005.40, 185,490,008.10 and 42,889,138.20

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Solution

The fourth proportional to 123,660,005.40, 185,490,008.10 and 42,889,138.20 is: 64,333,707.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,660,005.40 : 185,490,008.10 = 42,889,138.20 : x
  2. Step 2: Convert to fraction form
    123,660,005.40/185,490,008.10 = 42,889,138.20/x
  3. Step 3: Cross multiply
    123,660,005.40x = 185,490,008.10 × 42,889,138.20
  4. Step 4: Simplify right side
    123,660,005.40x = 7,955,506,592,120,020
  5. Step 5: Solve for x
    x = 7,955,506,592,120,020/123,660,005.40
  6. Step 6: Final answer
    x = 64,333,707.30

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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.