Home / 115,389,985.20-172,938,011.40-47,155,585.20

Finding the Fourth Proportional to 115,389,985.20, 172,938,011.40 and 47,155,585.20

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Solution

The fourth proportional to 115,389,985.20, 172,938,011.40 and 47,155,585.20 is: 70,673,318.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,389,985.20 : 172,938,011.40 = 47,155,585.20 : x
  2. Step 2: Convert to fraction form
    115,389,985.20/172,938,011.40 = 47,155,585.20/x
  3. Step 3: Cross multiply
    115,389,985.20x = 172,938,011.40 × 47,155,585.20
  4. Step 4: Simplify right side
    115,389,985.20x = 8,154,993,130,891,272
  5. Step 5: Solve for x
    x = 8,154,993,130,891,272/115,389,985.20
  6. Step 6: Final answer
    x = 70,673,318.11

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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.