Home / 139,968,128.20-209,952,192.30-99,153,459.40

Finding the Fourth Proportional to 139,968,128.20, 209,952,192.30 and 99,153,459.40

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Solution

The fourth proportional to 139,968,128.20, 209,952,192.30 and 99,153,459.40 is: 148,730,189.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,128.20 : 209,952,192.30 = 99,153,459.40 : x
  2. Step 2: Convert to fraction form
    139,968,128.20/209,952,192.30 = 99,153,459.40/x
  3. Step 3: Cross multiply
    139,968,128.20x = 209,952,192.30 × 99,153,459.40
  4. Step 4: Simplify right side
    139,968,128.20x = 20,817,486,175,159,044
  5. Step 5: Solve for x
    x = 20,817,486,175,159,044/139,968,128.20
  6. Step 6: Final answer
    x = 148,730,189.10

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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.